| Titulo | Fecha | Proveedor | Acceso | Cambio de titulo |
| Opuscula Annual of the Swedish Institutes at Athens and Rome | 2008- | Svenska institutet I Athen | Gratis | . |
| Opuscula Historae Artium | 2015- | Ebsco Academic | . | . |
| Opuscula Mathematica | 2004- | AGH University of Science and Technology | Gratis | . |
| Opuscula Mathematica | 2013- | Ebsco Academic | . | . |
| Opuscula Musealia | 2010- | Ebsco Academic | . | . |
| Opuscula Musealia | 2010- | Wydawnictwo Uniwersytetu Jagiellonskiego | Gratis | . |
| Opuscula Philolichenum | 2004- | New York Botanical Garden | Gratis | . |
| Opuscula Short texts of the Middle Ages and Renaissance | 2011- | University of Calgary | Gratis | . |
| Opuscula zoologica | 1957-1975 | BioDiversity Heritage Library | Gratis | . |
| Opuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis | 2001- | Eötvös Loránd University | Gratis | . |
| Opuscula Zoologica Instituti Zoosystematici et Oecologici Universitatis Budapestinensis | 2010- | Ebsco Academic | . | . |
| Opusculum | 2000- | Humboldt-Universität zu Berlin | Gratis | . |
| Opvscvla Archaeologica Papers of the Department of Archaeology | 1956- | Hrcak | Gratis | . |
| Opšta Medicina | 2014- | SCIndeks: Serbian Citation Index | Gratis | . |
| OQ | 1998-2005 | ProQuest Information and Learning | . | . |
| Oqimta | 2019- | Ebsco Academic | . | . |
| OR | 1953-1969 | JSTOR | . | Cambio de: Operational Research Quarterly (1950-1952) | Cambio a: Operational Research Quarterly (1970-1977) |
| OR in an OB World [BLOG] | 2018- | ProQuest Information and Learning | . | . |
| OR Insight | 2008-2013 | ProQuest Information and Learning | . | . |
| OR manager | 2005-2015 | Ebsco Academic | . | . |
| OR manager | 2000-2015 | ProQuest Information and Learning | . | . |
| OR Nurse | 2007-2015 | Ovid Technologies, Inc. | . | . |
| OR Spectrum | 2002- | Springer | . | Cambio de: OR Spektrum |
| OR Spectrum | 2002- excepto últimos 12 meses | Ebsco Academic | . | Cambio de: OR Spektrum |
| OR Spectrum | 2002- excepto últimos 12 meses | ProQuest Information and Learning | . | Cambio de: OR Spektrum |
| OR Spektrum Organ der Deutschen Gesellschaft für Operations Research | 1979-2001 | Springer | . | Cambio a: OR spectrum |
| Oracle The Research Journal of the Association of Fraternity Sorority Advisors | 2012-2022 | Ebsco Academic | . | . |
| Oradea Journal of Business and Economics | 2016- | University of Oradea | Gratis | . |
| Oráfrica revista de oralidad africana | 2005- | RACO | Gratis | . |
| Oral | 1999- | Imbiomed | Gratis
Registro individual requerido | . |
| Oral | 2006- | Medigraphic | Gratis | . |
| Oral | 2021- | MDPI AG | Gratis | . |
| Oral | 2021- | ProQuest Information and Learning | . | . |
| Oral | 2021- | Ebsco Academic | . | . |
| Oral & Craniofacial Tissue Engineering | 2011-2012 | Ebsco Academic | . | . |
| Oral & Implantology | 2008-2017 | PubMed Central | Gratis | . |
| Oral & Implantology | 2008- | CIC Edizioni Internazionali | Gratis | . |
| Oral & Implantology | 2012- | Ebsco Academic | . | . |
| Oral & Maxillofacial Pathology Journal | 2010- | Kairali Society of Oral & Maxillofacial Pathologists | Gratis | . |
| Oral & Maxillofacial Pathology Journal | 2010- | Ebsco Academic | . | . |
| Oral and Maxillofacial Surgery | 2008- | Springer | . | Cambio de: Mund-, Kiefer- und Gesichtschirurgie |
| Oral and Maxillofacial Surgery | 2013- excepto últimos 12 meses | Ebsco Academic | . | Cambio de: Mund-, Kiefer- und Gesichtschirurgie |
| Oral and Maxillofacial Surgery | 1997- excepto últimos 12 meses | ProQuest Information and Learning | . | Cambio de: Mund-, Kiefer- und Gesichtschirurgie |
| Oral and Maxillofacial Surgery Cases | 2015- | Clinical Key | . | . |
| Oral and Maxillofacial Surgery Cases | 2015- | Elsevier Science | Gratis | . |
| Oral and Maxillofacial Surgery Clinics of North America | 2002- | Elsevier Science | . | . |
| Oral and Maxillofacial Surgery Clinics of North America | 2007- | Clinical Key | . | . |
| Oral Diseases | 1997- | Wiley Online Library | . | . |
| Oral Diseases | 2003- excepto últimos 12 meses | Ebsco Academic | . | . |
| Oral Health | 2000- | Business Information Group | Gratis | . |
| Oral Health | 2014- | Ebsco Academic | . | . |
| Oral Health & Preventive Dentistry | 2003- | Ebsco Academic | . | . |
| Oral Health & Preventive Dentistry | 2003- | Quintessenz Verlags-GmbH | Gratis | . |
| Oral Health 0974 3960 | 2012- | Ebsco Academic | . | . |
| Oral Health and Dental Management | 2002- | Informedica | Gratis | . |
| Oral Health Office | 1997-2011 | ProQuest Information and Learning | . | . |
| Oral Health Office | 2013-2017 | Ebsco Academic | . | . |
| Oral History | 1972- excepto últimos 12 meses | JSTOR | . | . |
| Oral History Forum | 1975- | Canadian Oral History Association | Gratis | . |
| Oral History Review | 1973-2019 | Oxford Academic | . | . |
| Oral History Review | 1973- excepto últimos 60 meses | JSTOR | . | . |
| Oral History Review | 1997- | Taylor & Francis | . | . |
| Oral History Review | 2002-2007 | ProQuest Information and Learning | . | . |
| Oral Medicine & Pathology | 1996-2012 | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis | . |
| Oral Microbiology & Immunology | 1997-2009 | Wiley Online Library | . | Cambio a: Molecular Oral Microbiology |
| Oral Microbiology & Immunology | 1986-2009 | Ebsco Academic | . | Cambio a: Molecular Oral Microbiology |
| Oral Oncology | 1997- | Elsevier Science | . | Cambio de: European Journal of Cancer Part B: Oral Oncology; |
| Oral Oncology | 2007- | Clinical Key | . | Cambio de: European Journal of Cancer Part B: Oral Oncology; |
| Oral Oncology Extra | 2004-2006 | Elsevier Science | Gratis | . |
| Oral Oncology Reports | 2022- | Elsevier Science | Gratis | . |
| Oral Oncology Supplement | 2005-2009 | Elsevier Science | . | . |
| Oral Radiology | 1985- | Springer | . | . |
| Oral Radiology | 1997-2018 | ProQuest Information and Learning | . | . |
| Oral Science International | 2004-2010 | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis | . |
| Oral Science International | 2004-2018 | Elsevier Science | Gratis | . |
| Oral Science International | 2000- | Wiley Online Library | . | . |
| Oral Science International | 2010- excepto últimos 12 meses | Ebsco Academic | . | . |
| Oral Sciences | 2005- | Universidade Católica de Brasilia | Gratis | . |
| Oral Surgery 1752 2471 | 2008- | Wiley Online Library | . | . |
| Oral Surgery 1752 2471 | 2008- excepto últimos 12 meses | Ebsco Academic | . | . |
| Oral Surgery Oral Medicine Oral Pathology | 1948-1994 | Elsevier Science | . | Cambio a: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology |
| Oral Surgery Oral Medicine Oral Pathology and Oral Radiology | 2012- | Elsevier Science | . | Cambio de: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology |
| Oral Surgery Oral Medicine Oral Pathology and Oral Radiology | 2012- | Clinical Key | . | Cambio de: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology |
| Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology | 1995-2011 | Elsevier Science | . | Cambio de: Oral Surgery, Oral Medicine, Oral Pathology
Cambio a: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology |
| Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology | 2007- | Clinical Key | . | Cambio de: Oral Surgery, Oral Medicine, Oral Pathology
Cambio a: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology |
| Oral Therapeutics And Pharmacology | 1982- | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis
selecciones disponibles | . |
| Oral Therapeutics And Pharmacology | 2016- | Ebsco Academic | . | . |
| Oral Tradition | 1986- | Center for Studies in Oral Tradition | Gratis | Cambio a: eOT: Oral Tradition |
| Oral Tradition | 2004- | Ebsco Academic | . | Cambio a: eOT: Oral Tradition |
| Oral Tradition | 2003-2018 | Project Muse | . | Cambio a: eOT: Oral Tradition |
| Oralidad | 1988-2011 | UNESCO | Gratis | . |
| Oralidad-es | 2015- | Red Iberoamericana de Estudios de la Oralidad | Gratis | . |
| Oralprophylaxe & Kinderzahnheilkunde | 2014- | Springer | . | . |
| Orana | 1998-2005 | Ebsco Academic | . | . |
| Orange Book Blog | 2018-2018 | ProQuest Information and Learning | . | . |
| Orange County Business Journal | 1996- | Ebsco Academic | . | . |
| Orange County Business Journal | 1985- | ProQuest Information and Learning | . | . |
| Orapuh Journal Journal of Oral & Public Health | 2020- | Orapuh, Inc. | Gratis | . |
| Orbeliani | 2022- | Ebsco Academic | . | . |
| Orbicom Newsletter | 2004- | United Nations Educational, Scientific, and Cultural Organization | Gratis | . |
| Orbis | 1993- | Elsevier Science | . | . |
| Orbis | 1990-2001 | Ebsco Academic | . | . |
| Orbis Business | 2013- | Universidad Continental | Gratis | . |
| Orbis Idearum | 2013- | Jagiellonian University History of Ideas Research Centre | Gratis | . |
| Orbis linguarum | 1998- | CEEOL | Gratis | . |
| Orbis Litterarum | 1997- | Wiley Online Library | . | . |
| Orbis Scholae | 2006- | Univerzita Karlova v Praze | Gratis | . |
| Orbis Tertius Revista de teoría y crítica literaria | 1996- | Universidad Nacional de la Plata | Gratis | . |
| Orbis Tertius UPAL - Revista Académica y Científica de la Universidad Privada Abierta Latinoamericana | 2017- | Universidad Privada Abierta Latinoamericana | Gratis | . |
| Orbis. Revista Científica Ciencias Humanas | 2005- | Dialnet | Gratis | . |
| Orbis. Revista Científica Ciencias Humanas | 2005- | Red ALyC | Gratis | . |
| Orbis. Revista Científica Ciencias Humanas | 2014- | Ebsco Academic | . | . |
| Orbis. Revista Científica Ciencias Humanas | 2015- | ProQuest Information and Learning | . | . |
| Orbit | 1999-2008 | ProQuest Information and Learning | . | . |
| Orbit | 1997- excepto últimos 12 meses | Ebsco Academic | . | . |
| Orbit | 1997- | Taylor & Francis | . | . |
| Orbit : Writing Around Pynchon | 2012- | Ubiquity Press | Gratis | . |
| Orbit A Journal of American Literature | 2012- | Open Library of Humanities | Gratis | . |
| Orbit A Journal of American Literature | 2012- | ProQuest Information and Learning | . | . |
| Orbit Journal | 2017-2019 | Elsevier Science | Gratis | Cambio a: Journal of Responsible Technology |
| Orbit University of Sydney Undergraduate Research Journal | 2009- | University of Sydney | Gratis | . |
| Orbita Mathematicae | 2024- | Mathematical Sciences Publishers | . | . |
| Orbital The Electronic Journal of Chemistry | 2009- | Universidade Federal de Mato Grosso do Sul | Gratis | . |
| Orbital The Electronic Journal of Chemistry | 2010- | Ebsco Academic | . | . |
| Orbith: Majalah Ilmiah Pengembangan Rekayasa dan Sosial | 2014- | Politeknik Negeri Semarang | Gratis | . |
| Orchadian The | 1963-2015 | BioDiversity Heritage Library | Gratis | . |
| Orchard and farm | 1922-1924 | BioDiversity Heritage Library | Gratis | . |
| Orchard and garden | 1889-1891 | BioDiversity Heritage Library | Gratis | . |
| Orchardist | 2004- | Ebsco Academic | . | . |
| Orchid Academia Siraha | 2022- | Nepal Journals Online | Gratis | . |
| Orchid album : | 1882-1897 | BioDiversity Heritage Library | Gratis | . |
| Orchid Research Newsletter | 1998- | Royal Botanical Gardens, Kew | Gratis | . |
| Orchid review | 1893-1923 | BioDiversity Heritage Library | Gratis | . |
| Orchid Science and Biotechnology | 2007-2007 | Global Science Books | Gratis | . |
| Orchid world. A monthly illustrated journal entirely devoted to orchidology | 1910-1916 | BioDiversity Heritage Library | Gratis | . |
| Orchideenzauber | 2021- | Ebsco Academic | . | . |
| Orchidophile; journal des amateurs d'orchideés | 1881-1892 | BioDiversity Heritage Library | Gratis | . |
| Orchis Monatsschrift der Deutschen Gesellschaft für Orchideenkunde | 1906-1920 | Botanicus | Gratis | . |
| Orchis Monatsschrift der Deutschen Gesellschaft für Orchideenkunde | 1906-1920 | BioDiversity Heritage Library | Gratis | . |
| Orđ og Tunga | 2015- | Árni Magnússon Institute for Icelandic Studies | Gratis | . |
| Ordenanzas municipales para la ciudad de Monforte y su término municipal | 1897 | Galiciana | Gratis | . |
| Ordentliche wochentliche Kayserl Reichs Ober Post Amts Zeitung In Franckfurt am Mayn | 1750-1750 | Gottinger Digitalisierungs-Zentrum | Gratis | . |
| Order | 1984- | Springer | . | . |
| Order from Chaos [BLOG] | 2016- | ProQuest Information and Learning | . | . |
| Ordia Prima | 2002-2014 | Ebsco Academic | . | . |
| Ordit L' l'anuari del CREM | 2007- | RACO | Gratis | . |
| ORDO Jahrbuch für die Ordnung von Wirtschaft und Gesellschaft | 2014- | Ebsco Academic | . | . |
| Ore and Energy Resource Geology | 2019- | Elsevier Science | . | . |
| Ore Bin | 1939-1978 | Oregon Department of Geology and Mineral Industries | Gratis | Cambio a: Oregon Geology |
| Ore Geology Reviews | 1986- | Elsevier Science | . | . |
| Ore Geology Reviews | 2022- | Elsevier Science | Gratis | . |
| Oregon Business Magazine | 2007- | Ebsco Academic | . | . |
| Oregon Business Magazine | 1987-2010 | ProQuest Information and Learning | . | . |
| Oregon Capital Chronicle [BLOG] | 2023- | ProQuest Information and Learning | . | . |
| Oregon flora newsletter | 1995-2012 | BioDiversity Heritage Library | Gratis | . |
| Oregon Geology | 1979- | Oregon Deparment of Geology and Mineral Industries | Gratis | Cambio de: Ore Bin |
| Oregon grown gladiolus bulbs : March, 1927 [price list] | 1927-1927 | BioDiversity Heritage Library | Gratis | . |
| Oregon Historical Quarterly | 1926- excepto últimos 36 meses | JSTOR | . | Cambio de: Quarterly of the Oregon Historical Society, The |
| Oregon naturalist | 1894-1898 | BioDiversity Heritage Library | Gratis | . |
| Oregon Nurse | 1995-2015 | Ebsco Academic | . | . |
| Oregon sportsman | 1913-1918 | BioDiversity Heritage Library | Gratis | . |
| Oregon Wheat | 2004- | Ebsco Academic | . | . |
| Oregon's Agricultural Progress | 1996- | Oregon State University Extension and Experiment Station | Gratis | . |
| Orensano periódico gallego | 1944-1945 | Galiciana | Gratis | . |
| Orfeu | 2016- | Universidade do Estado de Santa Catarina | Gratis | . |
| Org & Demo | 2000- | Universidade Estadual Paulista (UNESP) | Gratis | . |
| Organ | 2007- | Ebsco Academic | . | . |
| Organ alternatives | 1998-2004 | OrgAt.com | Gratis | . |
| Organ Biology | 2011- | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis | . |
| Organ Transplantation Qi Guan Yi Zhi | 2014- | Ebsco Academic | . | . |
| Organelles Proteomics | 2014-2014 | Portico | Gratis | . |
| Organic Agriculture | 2011- | Springer | . | . |
| Organic Agriculture | 2019- excepto últimos 12 meses | ProQuest Information and Learning | . | . |
| Organic and Biomolecular Chemistry | 2003- | Royal Society of Chemistry | . | . |
| Organic and Medicinal Chemistry Letters | 2011-2014 | PubMed Central | Gratis | . |
| Organic and Medicinal Chemistry Letters | 2011-2014 | SpringerOpen | Gratis | . |
| Organic and Medicinal Chemistry Letters | 2011-2014 | ProQuest Information and Learning | . | . |
| Organic Chemistry Frontiers | 2013- | Royal Society of Chemistry | Gratis | . |
| Organic Chemistry Insights | 2008- | CLOCKSS | Gratis | . |
| Organic Chemistry Insights | 2008-2016 | ProQuest Information and Learning | . | . |
| Organic Chemistry Insights | 2008-2016 | Ebsco Academic | . | . |
| Organic Chemistry International | 2009-2017 | Ebsco Academic | . | . |
| Organic Chemistry International | 2008-2016 | Hindawi Publishing Corporation | Gratis | . |
| Organic Chemistry International | 2014-2016 | ProQuest Information and Learning | . | . |
| Organic Communications | 2008- | ACG Publications | Gratis | . |
| Organic Communications | 2008- | Ebsco Academic | . | . |
| Organic Communications | 2008- | ProQuest Information and Learning | . | . |
| Organic Electronics | 2000- | Elsevier Science | . | . |
| Organic Farming | 2015- | Librelloph | Gratis | . |
| Organic Gardening | 2003-2015 | Ebsco Academic | . | Cambio a: Organic Gardening |
| Organic Gardening | 1995-2015 | ProQuest Information and Learning | . | Cambio a: Organic Gardening |
| Organic Gardening 08973792 | 1990-2001 | Ebsco Academic | . | . |
| Organic Geochemistry | 1980- | Elsevier Science | . | . |
| Organic Letters | 1999- | American Chemical Society | . | . |
| Organic Materials | 2019- | Thieme | Gratis | . |
| Organic Photonics and Photovoltaics | 2013- | de Gruyter | Gratis | . |
| Organic Preparations & Procedures International | 1997- | Taylor & Francis | . | . |
| Organic Process Research and Development | 1997- | American Chemical Society | . | . |
| Organic Spa Magazine | 2009-2022 | Ebsco Academic | . | . |
| Organic Syntheses | 1921- | CambridgeSoft | Gratis | . |
| Organics | 2020- | MDPI AG | Gratis | . |
| Organics | 2020- | ProQuest Information and Learning | . | . |
| Organics | 2022- | Ebsco Academic | . | . |
| Organisation and activity of the I.R. Agricultural society of Vienna | 1913-1913 | BioDiversity Heritage Library | Gratis | . |
| Organisational and Social Dynamics | 2010-2021 | ProQuest Information and Learning | . | . |
| Organisational Project Management | 2014-2016 | UTSePress | Gratis | . |
| Organisational Project Management | 2015-2015 | Ebsco Academic | . | . |
| Organisationsberatung Supervision Coaching | 2000- | Springer | . | . |
| Organisationsentwicklung | 2019- | Ebsco Academic | . | . |
| Organised Sound | 1996- | Cambridge University Press | . | . |
| Organised Sound | 2001- excepto últimos 12 meses | ProQuest Information and Learning | . | . |
| Organisms Diversity & Evolution | 2001-2009 | Elsevier Science | . | . |
| Organisms Diversity & Evolution | 2010- | Springer | . | . |
| Organisms Diversity & Evolution Electronic Supplement | 2001-2006 | Gesellschaft fur Biologische Systematik (GfBS) (Germany) | Gratis | . |
| Organisms Journal of Biological Sciences | 2017- | Sapienza Universitŕ di Roma | Gratis | . |
| Organisms Journal of Biological Sciences | 2023- | Ebsco Academic | . | . |
| Organists' Review | 2006- | Ebsco Academic | . | . |
| Organizacija | 2008- | Sciendo | Gratis | . |
| Organizacija | 2008- | ProQuest Information and Learning | . | . |
| Organizacija | 2015- | Ebsco Academic | . | . |
| Organizacija Znanja | 2011- | ProQuest Information and Learning | . | . |
| Organizaçőes & Sociedade | 2000- | Universidade Federal da Bahia | Gratis | . |
| Organizaçőes & Sociedade | 1996- | SciELO (Brasil) | Gratis | . |
| Organizaçőes & Sociedade | 2005- | Red ALyC | Gratis | . |
| Organizaçőes e Sustentabilidade | 2013- | Universidade Estadual de Londrina | Gratis | . |
| Organizaçőes e Sustentabilidade | 2015- | Ebsco Academic | . | . |
| Organizaçőes Rurais e Agroindustriais | 1996- | Universidade Federal de Lavras | Gratis | . |
| Organizaçőes Rurais e Agroindustriais | 2005- | Red ALyC | Gratis | . |
| Organizaçőes Rurais e Agroindustriais | 2000- | University of Minnesota Libraries | Gratis | . |
| Organizaçőes Rurais e Agroindustriais | 2012- | Ebsco Academic | . | . |
| Organization | 1999- | Sage Journals | . | . |
| Organization | 1994- excepto últimos 12 meses | Ebsco Academic | . | . |
| Organization | 2002-2007 | ProQuest Information and Learning | . | . |
| Organization & Environment | 1999- | Sage Journals | . | . |
| Organization & Environment | 1997-2007 | ProQuest Information and Learning | . | . |
| Organization & Environment | 2009- | Ebsco Academic | . | . |
| Organization & Management Quarterly | 2015- | Ebsco Academic | . | . |
| Organization and Management | 2010- | Polska Akademia Nauk | Gratis | . |
| Organization and Management | 2010- | ProQuest Information and Learning | . | . |
| Organization Development Journal | 2004- | Ebsco Academic | . | . |
| Organization Development Journal | 1998- | ProQuest Information and Learning | . | . |
| Organization Development Review | 2019- | Ebsco Academic | . | . |
| Organization Management Journal | 2007- | ProQuest Information and Learning | . | . |
| Organization Management Journal | 2020- | Emerald | Gratis | . |
| Organization Management Journal Palgrave Macmillan Ltd | 2004-2010 | Ebsco Academic | . | . |
| Organization Review PrzeglÄ…d Organizacji | 2020- | Ebsco Academic | . | . |
| Organization Science | 1990- excepto últimos 60 meses | JSTOR | . | . |
| Organization Science | 1998- | INFORMS | . | . |
| Organization Science | 1990- excepto últimos 60 meses | Ebsco Academic | . | . |
| Organization Science | 1999-2009 | ProQuest Information and Learning | . | . |
| Organization Studies | 1999- | Sage Journals | . | . |
| Organization Studies | 1980- excepto últimos 12 meses | Ebsco Academic | . | . |
| Organization Technology & Management in Construction | 2009-2012 | Hrcak | Gratis | . |
| Organization Technology & Management in Construction | 2009- | ProQuest Information and Learning | . | . |
| Organization Technology & Management in Construction | 2016- | Sciendo | Gratis | . |
| Organization Technology & Management in Construction | 2012- | Ebsco Academic | . | . |
| Organization Theory 2631 7877 | 2023- | Ebsco Academic | . | . |
| Organization Theory 2631 7877 | 2020- | Sage Journals | . | . |
| Organizational aesthetics | 2007- | Society for Organizational Aesthetics Research | Gratis | . |
| Organizational Analysis | 2004-2005 | Ebsco Academic | . | . |
| Organizational Behavior and Human Decision Processes | 1985- | Elsevier Science | . | Cambio de: Organizational Behavior and Human Performance |
| Organizational Behavior and Human Performance | 1966-1984 | Elsevier Science | . | . |
| Organizational Change and Innovation | 2011- | Springer Series | . | . |
| Organizational Culture Management | 2014- | Ebsco Academic | . | . |
| Organizational Cultures An International Journal | 2014- | Ebsco Academic | . | . |
| Organizational Cultures An International Journal | 2013- | ProQuest Information and Learning | . | . |
| Organizational Cybersecurity Journal Practice Process and People | 2021- | ProQuest Information and Learning | . | . |
| Organizational Cybersecurity Journal Practice Process and People | 2021- | Emerald | Gratis | . |
| Organizational Dynamics | 1972- | Elsevier Science | . | . |
| Organizational Dynamics | 1972-2001 | Ebsco Academic | . | . |
| Organizational Economics Proceedings | 2012- | University of Sydney | Gratis | . |
| Organizational Musings [BLOG] | 2019- | ProQuest Information and Learning | . | . |
| Organizational Psychology Review | 2011- | Sage Journals | . | . |
| Organizational Research Methods | 1999- | Sage Journals | . | . |
| Organizational Research Methods | 2009- | Ebsco Academic | . | . |
| Organizational Research Methods | 2001-2007 | ProQuest Information and Learning | . | . |
| Organizational Science | 2012- excepto últimos 12 meses | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis | . |
| Organizational Science | 2020-2022 | Ebsco Academic | . | . |
| Organizations & Markets in Emerging Economies | 2010- | Ebsco Academic | . | . |
| Organizations & Markets in Emerging Economies | 2010- | CEEOL | Gratis | . |
| Organizations & Markets in Emerging Economies | 2010- | ProQuest Information and Learning | . | . |
| Organized Crime Digest | 2000-2007 | ProQuest Information and Learning | . | . |
| Organizing Strategies in Women's Health | 1994-1994 | ProQuest Information and Learning | . | . |
| Organogenesis | 2004- | Taylor & Francis | Gratis | . |
| Organogenesis | 2004- | PubMed Central | Gratis | . |
| Organoids | 2022- | MDPI AG | Gratis | . |
| Organoids | 2022- | Ebsco Academic | . | . |
| Organometallics | 1982- | American Chemical Society | . | . |
| Organon | 1995- | Universidade Federal do Rio Grande do Sul | Gratis | . |
| Organon | 2012- | Ebsco Academic | . | . |
| Organon | 2014- | ProQuest Information and Learning | . | . |
| Organon 00786500 | 2013- | Ebsco Academic | . | . |
| Organon F International journal of analytic philosophy | 1994-2018 | Filosofický ústav Akademie věd České republiky | Gratis | . |
| Organon F International journal of analytic philosophy | 2013- | Ebsco Academic | . | . |
| Organon F International journal of analytic philosophy | 1994- | Slovak Academy of Sciences | Gratis | . |
| Organs-on-a-Chip | 2019- | Elsevier Science | Gratis | . |
| Organum | 2018- | Universitas Winaya Mukti | Gratis | . |
| ORH Observatorio de Recursos Humanos | 2019- | Ebsco Academic | . | . |
| Oriens | 1948- excepto últimos 60 meses | JSTOR | . | . |
| Oriens | 2010- excepto últimos 36 meses | Ebsco Academic | . | . |
| Orient | 1960-2020 | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis | . |
| Orient Aviation | 2022- | ProQuest Information and Learning | . | . |
| Orient Bulletin | 1999- | Zentrum Moderner Orient | Gratis | . |
| Orient Deutsche Zeitschrift für Politik Wirtschaft und Kultur des Orients | 2007- | Deutsche Orient-Stiftung | Gratis | . |
| Orientación gallega | 1962-1965 | Galiciana | Gratis | . |
| Orientacion y Sociedad Revista Internacional e Interdisciplinaria de Orientacion Vocacional Ocupacional | 1999- | SciELO (Argentina) | Gratis | . |
| Orientacion y Sociedad Revista Internacional e Interdisciplinaria de Orientacion Vocacional Ocupacional | 1999- | Universidad Nacional de la Plata | Gratis | . |
| Oriental annual, or, Scenes in India / | 1834-1840 | BioDiversity Heritage Library | Gratis | . |
| Oriental Anthropologist | 2001- | Sage Journals | . | . |
| Oriental Anthropologist | 2010-2018 | ProQuest Information and Learning | . | . |
| Oriental Insects | 1997- | Taylor & Francis | . | . |
| Oriental Journal of Chemistry | 2008- | Oriental Scientific Publishing | Gratis | . |
| Oriental Journal of Computer Science and Technology | 2008- | Oriental Scientific Publishing Company | Gratis | . |
| Oriental pharmacy and experimental medicine. | 2011-2019 | Springer | . | Cambio de: International journal oriental pharmacy and experimental medicine | Cambio a: Advances in Traditional Medicine |
| Oriental serial publications in the zoological sciences | 1963 | BioDiversity Heritage Library | Gratis | . |
| Oriental Studies | 2008- | elpub.ru | Gratis | . |
| Oriental Studies Shodoznavstvo | 2023- | Ebsco Academic | . | . |
| Orientalia Suecana | 1952- | Uppsala University | Gratis | . |
| Orientaliska Studier | 2022- | Ebsco Academic | . | . |
| Orientalistische Literaturzeitung Zeitschrift für die Wissenschaft vom ganzen Orient und seinen Beziehungen zu den angrenzenden Kulturkreisen | 1995- | de Gruyter | . | . |
| Orientando | 2011- | Universidad Veracruzana | Gratis | . |
| Orientations | 2013-2020 | Ebsco Academic | . | . |
| Oriente Moderno | 1922- excepto últimos 36 meses | JSTOR | . | . |
| Oriente Moderno | 2013- excepto últimos 36 meses | Ebsco Academic | . | . |
| Orientes do Portugues | 2019- | Universidade do Porto | Gratis | . |
| Originais reprovados A revista literária dos alunos de USP | 2009- | USP Portal del Revistas | Gratis | . |
| Original Cyn [The Telegraph, Alton, Illinois - BLOG] | 2009-2012 | ProQuest Information and Learning | . | . |
| Original Dock and Canal List etc | 1811-1817 | Gale MOMW | . | . |
| Original Internist | 2008- | Ebsco Academic | . | . |
| Origination News | 2008-2014 | Ebsco Academic | . | . |
| Origination News | 1994-2014 | ProQuest Information and Learning | . | . |
| Origini | 2015- | Ebsco Academic | . | . |
| Origins and Design | 1996-1999 | Access Research Network | Gratis | . |
| Origins of life | 1974-1984 | Springer | . | Cambio de: Space life sciences | Cambio a: Origins of Life and Evolution of Biospheres |
| Origins of Life and Evolution of Biospheres | 1985- | Springer | . | Cambio de: Origins of life |
| Origins of Life and Evolution of Biospheres | 2011- excepto últimos 12 meses | Ebsco Academic | . | Cambio de: Origins of life |
| Origins of Life and Evolution of Biospheres | 1997- excepto últimos 12 meses | ProQuest Information and Learning | . | Cambio de: Origins of life |
| Origins Studies in the Sources of Scientific Creativity | 2009 | Springer Series | . | . |
| Orillas Studi d'ispanistica | 2012- | Padova University Press | Gratis | . |
| Orillia Today | 2003- | ProQuest Information and Learning | . | . |
| Orinoquia | 2003- | Red ALyC | Gratis | . |
| Orinoquia | 2004-2012 | Imbiomed | Gratis
Registro individual requerido | . |
| Orinoquia | 2011- | Dialnet | Gratis | . |
| Orinoquia | 2010- | SciELO (Colombia) | Gratis | . |
| Orinoquia | 2003- | Universidad de Los Llanos | Gratis | . |
| oriole : official organ of the Somerset Hills Bird Club | 1914-1915 | BioDiversity Heritage Library | Gratis | . |
| Oriole The Quarterly Journal of the Georgia Ornithological Society | 2005-2013 | SORA | Gratis | . |
| Oriole The Quarterly Journal of the Georgia Ornithological Society | 1936-2006 | Georgia Ornithological Society | Gratis | . |
| Orion | 2006- | Ebsco Academic | . | . |
| Orion | 1985- | Operations Research Society of South Africa (ORSSA) | Gratis | . |
| ORiON | 2004- | AJOL | Gratis | . |
| Orion Magazine | 2011- | Ebsco Academic | . | . |
| Orissa Journal of Psychiatry | 2006-2012 | Indian Psychiatric Society | Gratis | . |
| Orissa Journal of Psychiatry | 2022- | Lippincott Williams & Wilkins | Gratis | . |
| Orissa review | 1972-1994 | Government of Orissa | Gratis | . |
| Orizzonte Cina | 2010- | Universitŕ di Torino | Gratis | . |
| ORL journal for oto rhino laryngology and its related specialties | 2009-2010 | PubMed Central | Gratis
Artículos selectos | . |
| ORL journal for oto rhino laryngology and its related specialties | 1998- | Karger Publishers | . | . |
| ORL journal for oto rhino laryngology and its related specialties | 1998-2015 | ProQuest Information and Learning | . | . |
| ORL ro | 2015- | MedicHub Media | Gratis | . |
| ORL ro | 2013- | Ebsco Academic | . | . |
| Orlando Business Journal | 1996- | American City Business Journals Inc. | Gratis | . |
| Orlando Business Journal | 1999-2004 | ProQuest Information and Learning | . | . |
| Orlando Homicide Report [Orlando Sentinel - BLOG] | 2009-2010 | ProQuest Information and Learning | . | . |
| Orlando Sentinel | 1985- | ProQuest Information and Learning | . | . |
| Orlando Sentinel (Online) | 2017- | ProQuest Information and Learning | . | . |
| Orlando Sentinel Blogs (Orlando, FL) | 2014-2015 | ProQuest Information and Learning | . | . |
| Orleans EMC | 2009-2018 | ProQuest Information and Learning | . | . |
| ORNAC Journal | 2012- excepto últimos 6 meses | Ebsco Academic | . | . |
| ORNAC Journal | 2003- | ProQuest Information and Learning | . | . |
| Ornament | 1997-2015 | Ebsco Academic | . | . |
| Ornament | 2005- | ProQuest Information and Learning | . | . |
| Ornamental Horticulture | 1995- | Sociedade Brasileira de Floricultura e Plantas Ornamentais | Gratis | . |
| Ornamental Horticulture | 2017- | SciELO (Brasil) | Gratis | . |
| Ornamental Outlook | 1998-2009 | ProQuest Information and Learning | . | . |
| Ornamental Plant Research | 2021- | Maximum Academic Press | Gratis | . |
| Ornis | 1885-1910 | BioDiversity Heritage Library | Gratis | . |
| Ornis | 1886-1910 | BioDiversity Heritage Library | Gratis | . |
| Ornis Fennica | 2010- | ProQuest Information and Learning | . | . |
| Ornis Fennica | 2012- | Ebsco Academic | . | . |
| Ornis Fennica | 2021- | BirdLife Finland | Gratis | . |
| Ornis Hungarica Scientific Journal of the BirdLife Hungary | 1991- | Hungarian Ornithological and Nature Conservation Society | Gratis | . |
| Ornis Hungarica Scientific Journal of the BirdLife Hungary | 2012- | Sciendo | Gratis | . |
| Ornis Hungarica Scientific Journal of the BirdLife Hungary | 2014- | Ebsco Academic | . | . |
| Ornis Scandinavica | 1970-1993 | JSTOR | . | Cambio a: Journal of Avian Biology |
| Ornis Svecica | 2019- | Ebsco Academic | . | . |
| Ornithological Applications | 2021- | Oxford Academic | . | Cambio de: Condor, The |
| Ornithological Applications | 2021- | Bioone | . | Cambio de: Condor, The |
| Ornithological Monographs | 1964-2005 | SORA | Gratis | . |
| Ornithological Monographs | 1964- excepto últimos 36 meses | JSTOR | . | . |
| Ornithological Monographs | 2006-2014 | Bioone | . | . |
| Ornithological Monographs | 2008-2012 | ProQuest Information and Learning | . | . |
| Ornithological Newsletter | 1997- | Ornithological Societies of North America (OSNA) | Gratis | . |
| Ornithological report | 1965-1988 | BioDiversity Heritage Library | Gratis | . |
| Ornithological Science | 2002- | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis
selecciones disponibles | . |
| Ornithological Science | 2005- | Bioone | . | . |
| Ornithologische Monatsberichte | 1894-1923 | BioDiversity Heritage Library | Gratis | . |
| Ornithologische Monatsschrift | 1890-1922 | BioDiversity Heritage Library | Gratis | . |
| Ornithologischer Anzeiger | 1991- | Landesmuseum | Gratis | Cambio de: Anzeiger der Ornithologischen Gesellschaft in Bayern |
| Ornithologischer Rundbrief für Mecklenburg-Vorpommern | 2004- | Ornithologische Arbeitsgemeinschaft Mecklenburg-Vorpommern | Gratis | . |
| Ornithologisches Centralblatt | 1876-1879 | BioDiversity Heritage Library | Gratis | . |
| Ornithologisches Centralblatt | 1880-1882 | BioDiversity Heritage Library | Gratis | . |
| Ornithologisches Jahrbuch | 1890-1918 | BioDiversity Heritage Library | Gratis | . |
| Ornithologist | 1885-1885 | BioDiversity Heritage Library | Gratis | . |
| Ornithologist and botanist | 1891-1892 | BioDiversity Heritage Library | Gratis | . |
| Ornithologist and oölogist | 1881-1893 | BioDiversity Heritage Library | Gratis | . |
| Ornithologist; a magazine of ornithology and oölogy | 1896-1897 | BioDiversity Heritage Library | Gratis | . |
| Ornithologists' and Oologists' Semi-Annual | 1889-1891 | BioDiversity Heritage Library | Gratis | Cambio a: Semi-Annual (Agassiz Association. Department of the Wilson Chapter) |
| Ornithologists' and Oologists' Semi-Annual | 1889-1890 | JSTOR | Gratis | Cambio a: Semi-Annual (Agassiz Association. Department of the Wilson Chapter) |
| Ornithology | 2021- | Oxford Academic | . | Cambio de: Auk, The |
| Ornithology | 2021- | Bioone | . | Cambio de: Auk, The |
| Ornithology Research | 2014- | Springer | . | . |
| Ornitología Colombiana | 2003- | Asociación Colombiana de Ornitología | Gratis | . |
| Ornitologia Neotropical | 1990-2014 | SORA | Gratis | . |
| Ornitologia Neotropical | 2015- | Simon Fraser University | Gratis | . |
| Ornitologia Neotropical | 2023- | Ebsco Academic | . | . |
| Ornitologicheskii viestnik | 1910-1917 | BioDiversity Heritage Library | Gratis | . |
| ORNL Review Oak Ridge National Laboratory | 1967- | U.S. Department of Energy, Oak Ridge National Laboratory | Gratis | . |
| Oromia Law Journal | 2012- | AJOL | Gratis | . |
| Orphan Drugs Research & Reviews | 2011-2017 | Dove Medical Press | Gratis | . |
| Orphan Drugs Research & Reviews | 2011-2017 | ProQuest Information and Learning | . | . |
| Orphanet Journal of Rare Diseases | 2006- | PubMed Central | Gratis | . |
| Orphanet Journal of Rare Diseases | 2006- | BioMed Central | Gratis | . |
| Orphanet Journal of Rare Diseases | 2006- | Ebsco Academic | . | . |
| Orphanet Journal of Rare Diseases | 2009- | ProQuest Information and Learning | . | . |
| Orquideología | 2013- | Sociedad Colombiana de Orquideología | Gratis | . |
| ORSA Journal on Computing | 1989-1996 | Operations Research Society of America | Gratis | . |
| ORSA Journal on Computing | 1989-1995 | Ebsco Academic | . | . |
| ORSEA Journal | 2021- | Ebsco Academic | . | . |
| Orsis Organismes i Sistemes | 1985-2017 | Universidad Autónoma de Barcelona | Gratis | . |
| Orsis Organismes i Sistemes | 1985-2017 | RACO | Gratis | . |
| Orsis Organismes i Sistemes | 2014-2017 | Universidad Autónoma de Barcelona | Gratis | . |
| Orta Asya ve Kafkasya Arastirmalari | 2011-2015 | ProQuest Information and Learning | . | . |
| Ortadogu Medical Journal Ortadogu Tip Dergisi | 2011-2020 | Ebsco Academic | . | . |
| Ortadogu Yilligi | 2011-2014 | ProQuest Information and Learning | . | . |
| ORTESOL Journal | 2003- | ProQuest Information and Learning | . | . |
| Orthodontic Journal of Nepal | 2011- | Nepal Journals Online | Gratis | . |
| Orthodontic Products | 2007- | Ebsco Academic | . | . |
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| Orthodontic Waves | 2006-2019 | Elsevier Science | . | . |
| Orthodontic Waves | 2006-2021 | Taylor & Francis | . | . |
| Orthodontics & Craniofacial Research | 2002- | Wiley Online Library | . | Cambio de: Clinical Orthodontics and Research |
| Orthodontics & Craniofacial Research | 2002- excepto últimos 12 meses | Ebsco Academic | . | Cambio de: Clinical Orthodontics and Research |
| ORTHODONTICS The Art & Practice of Dentofacial Enhancement | 2011-2013 | Ebsco Academic | . | . |
| Orthodontie Française | 2012- | Ebsco Academic | . | . |
| Orthodox Church | 2005-2012 | Orthodox Church in America | Gratis | . |
| Orthodox Legacy | 2015- | Ebsco Academic | . | . |
| Orthomolecular psychiatry | 1972-1973 | Academy of Orthomolecular Psychiatry | Gratis | Cambio de: Schizophrenia | Cambio a: Journal of orthomolecular psychiatry |
| Orthopadie Technik Quarterly | 2008-2011 | Wayback Machine | Gratis | . |
| Orthopaedic Genius | 1995- | Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics | Gratis | . |
| Orthopaedic Journal of Sports Medicine | 2013- | Sage Journals | Gratis | . |
| Orthopaedic Journal of Sports Medicine | 2013- | PubMed Central | Gratis | . |
| Orthopaedic Journal of Sports Medicine | 2013- | ProQuest Information and Learning | . | . |
| Orthopaedic Nursing | 2000-2007 | Ebsco Academic | . | . |
| Orthopaedic Nursing | 2015- | Ovid Technologies, Inc. | . | . |
| Orthopaedic Nursing | 1998-2012 | ProQuest Information and Learning | . | . |
| Orthopaedic Physical Therapy Practice | 2014- | Ebsco Academic | . | . |
| Orthopaedic Physical Therapy Practice | 2020- | ProQuest Information and Learning | . | . |
| Orthopaedic Proceedings | 2002- | British Editorial Society of Bone and Joint Surgery | Gratis | . |
| Orthopaedic Surgery | 2009- | Wiley Online Library | Gratis | . |
| Orthopaedic Surgery | 2011- | Ebsco Academic | . | . |
| Orthopaedic Surgery | 2019- | ProQuest Information and Learning | . | . |
| Orthopaedic Surgery | 2009- | PubMed Central | Gratis | . |
| Orthopaedic Surgery | 2009- | Ovid Technologies, Inc. | . | . |
| Orthopaedics & Traumatology Surgery & Research | 2009- | Elsevier Science | . | . |
| Orthopaedics & Traumatology Surgery & Research | 2009- | Clinical Key | . | . |
| Orthopaedics & Traumatology Surgery & Research | 2009- excepto últimos 6 meses | Elsevier Masson | Gratis | . |
| Orthopaedics and Trauma | 2009- | Elsevier Science | . | Cambio de: Current Orthopaedics |
| Orthopaedics and Trauma | 2009- | Clinical Key | . | Cambio de: Current Orthopaedics |
| Orthopaedics Today Europe | 2008-2010 | Ebsco Academic | . | . |
| Orthopaedics Today Europe | 2008-2020 | ProQuest Information and Learning | . | . |
| Orthopaedics Today International Edition | 2008-2008 | Ebsco Academic | . | . |
| Orthopaedics Traumatology & Prosthetics Ortopediia Traumatologiia i Protezirovaniie | 2017- | Ebsco Academic | . | . |
| Orthopdie & Rheuma | 2012- | Springer | . | . |
| Orthopedic Biology and Medicine | 2006-2008 | Springer Series | . | . |
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| Orthopedic Clinics of North America | 2007- | Clinical Key | . | . |
| Orthopedic Research and Reviews | 2009- | Dove Medical Press | Gratis | . |
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| Orthopedic Research and Reviews | 2009- | ProQuest Information and Learning | . | . |
| Orthopedic Research and Reviews | 2009- | Ebsco Academic | . | . |
| Orthopedic Research and Reviews | 2009- | Taylor & Francis | Gratis | . |
| Orthopedic Reviews | 2009- | Open Medical Publishing | Gratis | . |
| Orthopedic Reviews | 2009- | PubMed Central | Gratis | . |
| Orthopedic Reviews | 2009- | Ebsco Academic | . | . |
| Orthopedic Reviews | 2009-2021 | ProQuest Information and Learning | . | . |
| Orthopedics | 2009- | Slack Incorporated | Gratis | . |
| Orthopedics & Traumatology | 1951- | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | . | . |
| Orthopedics and Traumatology | 1992-2002 | Springer | . | . |
| Orthopedics Today | 1996- | Slack Incorporated | Gratis | . |
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| Orthopédie traumatologie European journal of orthopaedic surgery & traumatology | 1991-1994 | Springer | . | Cambio a: European journal of orthopaedic surgery & traumatology |
| Orthoplastic Surgery | 2020- | Elsevier Science | Gratis | . |
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| Orthotips | 2005- | Medigraphic | Gratis | . |
| Ortodoncia actual | 2011- | Imbiomed | Gratis
Registro individual requerido | . |
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| Ortopedija, Travmatologija i Vosstanovitelnaja Chirurgija Detskogo Vozrasta | 2013- | Turner Scientific and Research Institute for Children's Orthopedics | Gratis | . |
| Oryx: International Journal of Conservation - The Journal of Flora & Fauna International | 1950- | Cambridge University Press | OA 2021- | . |
| Oryx: International Journal of Conservation - The Journal of Flora & Fauna International | 2002- | ProQuest Information and Learning | . | . |
| Oryx: International Journal of Conservation - The Journal of Flora & Fauna International | 2021- | Cambridge University Press | Gratis | . |
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| OSA Continuum | 2018-2021 | Optica Publishing Group | Gratis | Cambio a: Optics Continuum |
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| Osasunkaria Vitoria Gasteiz | 1997-1999 | Gobierno Vasco | Gratis | Cambio de: Sisva Vitoria |
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| OSERA Observatorio Social de Empresas Recuperadas y Autogestión | 2009- | Universidad de Buenos Aires | Gratis | . |
| Osgood Hall Law Journal | 1958- | York University, Canada | Gratis | . |
| OSHA Compliance News | 2014-2020 | ProQuest Information and Learning | . | . |
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| Osijek journal | 2009- | Hrcak | Gratis | . |
| Osiris | 1936- excepto últimos 36 meses | JSTOR | . | . |
| Osiris | 1999- excepto últimos 12 meses | Ebsco Academic | . | . |
| Osiris | 2006- | University of Chicago Press | . | . |
| Osje ki matemati ki list | 2013- | Ebsco Academic | . | . |
| Osje ki matemati ki list | 2001- | Hrcak | Gratis | . |
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| Oslo Law Review | 2014- | Idunn | Gratis | . |
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| OSMA Journal | 2013- | Oklahoma State Medical Association | Gratis | . |
| Osmanli Bilimi Arastirmalari | 1995- | Istanbul University Press | Gratis | . |
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| Osmanli Bilimi Arastirmalari | 2022- | Ebsco Academic | . | . |
| Osmia Journal of Hymenopterology | 2007- | Observatoire des Abeilles | Gratis | . |
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| Osprey : an illustrated monthly magazine of popular ornithology | 1896-1902 | BioDiversity Heritage Library | Gratis | . |
| Osprey Newsletter | 2009- | Ebsco Academic | . | . |
| Osservatore Romano L'Osservatore Romano | 2003- | Osservatore Romano | Gratis | . |
| Osservatorio Music | 2015- | Universitŕ di Torino | Gratis | . |
| Ossietzky Zweimonathenschrift für Politik Kultur Wirtschaft | 2002- | Verlag Ossietzky | Gratis | . |
| Osteoarthritis : an Atlas of Investigation and Diagnosis | 2005-2005 | ProQuest Information and Learning | . | . |
| Osteoarthritis and Cartilage | 1993- | Elsevier Science | . | . |
| Osteoarthritis and Cartilage | 2007- | Clinical Key | . | . |
| Osteoarthritis and Cartilage | 1993- excepto últimos 12 meses | Elsevier Science | Gratis | . |
| Osteoarthritis and Cartilage Open | 2019- | Elsevier Science | Gratis | . |
| Osteoarthritis and Cartilage Open | 2019- | PubMed Central | Gratis | . |
| Osteoarthritis Imaging | 2021- | Elsevier Science | . | . |
| Osteology | 2021- | MDPI AG | Gratis | . |
| Osteology | 2022- | Ebsco Academic | . | . |
| Osteopathic Family Physician | 2009-2013 | Clinical Key | . | . |
| Osteopathic Medicine and Primary Care | 2007-2010 | PubMed Central | Gratis | . |
| Osteopathic Medicine and Primary Care | 2007-2010 | BioMed Central | Gratis | . |
| Osteopathic Medicine and Primary Care | 2009-2010 | ProQuest Information and Learning | . | . |
| Osteopathische Medizin Zeitschrift für ganzheitliche Heilverfahren | 2008- | Elsevier Science | . | . |
| Osteopatía Científica | 2008-2011 | Elsevier Science | . | . |
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| Osteoporosis : an Atlas of Investigation and Management | 2008-2008 | ProQuest Information and Learning | . | . |
| Osteoporosis and Sarcopenia | 2015- | Elsevier Science | Gratis | . |
| Osteoporosis and Sarcopenia | 2016- | PubMed Central | Gratis | . |
| Osteoporosis International | 1990- | Springer | . | . |
| Osteoporosis International | 1997- excepto últimos 12 meses | ProQuest Information and Learning | . | . |
| Osteoporoz i osteopatii | 2005- | UP Print | Gratis | . |
| Osterreichische Militarische Zeitschrift | 2001- | Bundesministerium für Landesverteidigung | Gratis | . |
| Osterreichische Musikzeitschrift | 2009-2014 | Ebsco Academic | . | . |
| Osterreichische Musikzeitschrift | 2011-2014 | ProQuest Information and Learning | . | . |
| Osteuropa 1953-1980 | 1953-1980 | CEEOL | Gratis | . |
| Ostium | 2010- | Ebsco Academic | . | . |
| Ostium | 2005- | Schola Philosophica | Gratis | . |
| Ostomy Wound Management | 2001-2018 | HMP Communications, LLC | Gratis | Cambio a: Wound management & prevention |
| Ostraka | 2021- | Ebsco Academic | . | . |
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| OT Practice | 2006-2018 | ProQuest Information and Learning | . | . |
| OTA International | 2018- | Ovid Technologies, Inc. | . | . |
| OTA International | 2019- | Lippincott Williams & Wilkins | Gratis | . |
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| OTAM Osmanl? Tarihi Aras t?rma ve Uygulama Merkezi Dergisi | 1990- | Ankara Üniversitesi | Gratis | . |
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| Other Voices The e Journal of Cultural Criticism | 1997- | University of Pennsylvania | Gratis | . |
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| OTJR Occupation Participation & Health | 2003-2010 | Ebsco Academic | . | Cambio de: OTJR: Occupational Therapy Journal of Research |
| OTJR Occupation Participation & Health | 2002-- | Sage Journals | . | Cambio de: OTJR: Occupational Therapy Journal of Research |
| OTJR Occupation Participation & Health | 1981-2014 | ProQuest Information and Learning | . | Cambio de: OTJR: Occupational Therapy Journal of Research |
| OTJR Occupational Therapy Journal of Research | 1998-2001 | Sage Journals | . | Cambio a: OTJR : Occupation, Participation and Health |
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| OTO Open The Official Open Access Journal of the American Academy of Otolaryngology–Head and Neck Surgery Foundation | 2017- | Wiley Online Library | Gratis | . |
| OTO Open The Official Open Access Journal of the American Academy of Otolaryngology–Head and Neck Surgery Foundation | 2017-2022 | Sage Journals | Gratis | . |
| OTO Open The Official Open Access Journal of the American Academy of Otolaryngology–Head and Neck Surgery Foundation | 2017- | PubMed Central | Gratis | . |
| OTO Open The Official Open Access Journal of the American Academy of Otolaryngology–Head and Neck Surgery Foundation | 2017-2022 | ProQuest Information and Learning | . | . |
| Oto-Rhino-Laryngologia Nova | 1998-2002 | Karger Publishers | . | . |
| Otolaryngologia Polska | 2011- | Index Copernicus | Gratis | . |
| Otolaryngologic Clinics of North America | 1998- | Elsevier Science | . | . |
| Otolaryngologic Clinics of North America | 2007- | Clinical Key | . | . |
| Otolaryngology - Head and Neck Surgery | 1999-2022 | Sage Journals | . | . |
| Otolaryngology - Head and Neck Surgery | 2015- | Wiley Online Library | Gratis | . |
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| Otolaryngology Case Reports | 2016- | Clinical Key | . | . |
| Otolaryngology Online Journal | 2011- | Allied Academies | Gratis | . |
| Otology & Neurotology | 2015- | Ovid Technologies, Inc. | . | . |
| Otology & Neurotology Open | 2021- | Ovid Technologies, Inc. | . | . |
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| Otorhinolaryngology & Phoniatrics Otorinolaryngologie a Foniatrie | 2011- | Ebsco Academic | . | . |
| Otorhinolaryngology Clinics An International Journal | 2009- excepto últimos 12 meses | Jaypee Brothers | Gratis | . |
| Otorhinolaryngology Clinics An International Journal | 2023- | Ebsco Academic | . | . |
| Otoritas: Jurnal Ilmu Pemerintahan | 2011- | Universitas Muhammadiyah Makassar | Gratis | . |
| Otorynolaryngologia | 2007-2020 | Ebsco Academic | . | . |
| Otra Economía | 2007- | Universidade do Vale do Rio dos Sinos | Gratis | . |
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| Otras Miradas | 2001-2007 | Red ALyC | Gratis | . |
| Otros Diálogos | 2017- | ProQuest Information and Learning | . | . |
| Otros logos Revista de estudiós críticos | 2010- | Universidad Nacional del Comahue | Gratis | . |
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| Ottawa Citizen | 2003- | CanWest Global Communications Corp. | Gratis | . |
| Ottawa East EMC | 2009-2018 | ProQuest Information and Learning | . | . |
| Ottawa Law Review | 1966- | University of Ottawa | Gratis | . |
| Ottawa Letter | 1997-2002 | ProQuest Information and Learning | . | . |
| Ottawa naturalist | 1887-1919 | BioDiversity Heritage Library | Gratis | . |
| Ottawa South EMC | 2009-2018 | ProQuest Information and Learning | . | . |
| Ottawa Sun | 2007- excepto últimos 1 dias | ProQuest Information and Learning | . | . |
| Ottawa this Week | 2011-2013 | ProQuest Information and Learning | . | . |
| Ottawa West EMC | 2009-2018 | ProQuest Information and Learning | . | . |
| Otto Graf Journal Annual Journal on Research and Testing of Materials | 1990- | Otto-Graf-Institute, Research and Testing Establishment for Building | Gratis | . |
| Oud Holland | 2008- excepto últimos 36 meses | Ebsco Academic | . | . |
| Oukan Journal of Transdisciplinary Federation of Science and Technology | 2007- | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis | . |
| OUP Orthopadische und Unfallchirurgische Praxis | 2021- | Ebsco Academic | . | . |
| Our Choice | 2006-2007 | Ebsco Academic | . | . |
| Our Dermatology Online Nasza Dermatologia Online | 2010- | Our Dermatology Online | Gratis | . |
| Our Dermatology Online Nasza Dermatologia Online | 2012- | Ebsco Academic | . | . |
| Our Dermatology Online Nasza Dermatologia Online | 2010-2019 | ProQuest Information and Learning | . | . |
| Our Economy Nase Gospodarstvo | 2004- | Ebsco Academic | . | . |
| Our Economy Nase Gospodarstvo | 2015- | Sciendo | Gratis | . |
| Our Economy Nase Gospodarstvo | 2005- | ProQuest Information and Learning | . | . |
| Our garden journal [an illustrated quarterly conducted and controlled by amateur flower gardeners] | 1917-1920 | BioDiversity Heritage Library | Gratis | . |
| Our Global Voices: CDC [BLOG] | 2018-2021 | ProQuest Information and Learning | . | . |
| Our living oceans the ... annual report on the status of U.S. living marine resources | 1991 | BioDiversity Heritage Library | Gratis | . |
| Our Nature | 2008- | Ebsco Academic | . | . |
| Our Nature | 2003- | Nepal Journals Online | Gratis | . |
| Our own voice | 2001-2016 | Wayback Machine | Gratis | . |
| Our Planet | 1996- | United Nations Environment Programme | Gratis | . |
| Our Schools Our Selves | 2005-2012 | ProQuest Information and Learning | . | . |
| Our Sunday Visitor | 2008- | Ebsco Academic | . | . |
| Our Times | 1993- | ProQuest Information and Learning | . | . |
| OurPlanet | 2010-2011 | ProQuest Information and Learning | . | . |
| OUSL Journal | 1997- | SLJOL | Gratis | . |
| Out | 2006- | ProQuest Information and Learning | . | . |
| Out | 2003- | Ebsco Academic | . | . |
| Out & About | 2008-2021 | ProQuest Information and Learning | . | . |
| Out of Doors | 2004- | Ebsco Academic | . | . |
| Out There [The Gazette, Colorado Springs, Colorado - BLOG] | 2009-2011 | ProQuest Information and Learning | . | . |
| Out to Innovate Bulletin | 2021- | ProQuest Information and Learning | . | . |
| Out Traveler | 2006-2008 | ProQuest Information and Learning | . | . |
| Outbreak Management and Response | 2024- | Taylor & Francis | Gratis | . |
| Outcomes & Accountability Alert | 1999-2000 | Ebsco Academic | . | . |
| Outcomes Management | 2002-2004 | Ovid Technologies, Inc. | . | Cambio a: Quality Management in Health Care |
| Outcomes Management for Nursing Practice | 1997-2001 | Ovid Technologies, Inc. | . | . |
| Outdoor America | 2000- | Izaak Walton League of America | Gratis | . |
| Outdoor California | 2000-2009 | Wayback Machine | Gratis | . |
| Outdoor Canada | 2000-2009 | ProQuest Information and Learning | . | . |
| Outdoor Industry Compass | 2020- | ProQuest Information and Learning | . | . |
| Outdoor Industry Compass | 2021- | Ebsco Academic | . | . |
| Outdoor Life | 2001-2020 | Ebsco Academic | . | . |
| Outdoor Life | 1988-2020 | ProQuest Information and Learning | . | . |
| Outdoor Power Equipment OPE | 1996- | Adams Business Media | Gratis | . |
| Outdoor Retailer | 1999- | Bill Communications, Inc. | Gratis | . |
| Outdoor Retailer | 2018- | Ebsco Academic | . | . |
| Outils de l'OCDE pour le développement Les | 2016- | OECD | Gratis | . |
| Outlier | 2007-2010 | Ebsco Academic | . | . |
| Outlines Critical Practice Studies | 1999- | Aarhus University | Gratis | . |
| Outlines Critical Practice Studies | 2010- | ProQuest Information and Learning | . | . |
| Outlines in Pharmaceutical Sciences | 2011 | Springer Series | . | . |
| Outlines of Global Transformations: Politics, Economics, Law | 2016- | . | Gratis | . |
| Outlook | 1990-2000 | Ebsco Academic | . | . |
| Outlook | 2006-2018 | ProQuest Information and Learning | . | . |
| Outlook Journal of English Studies | 2020- | Nepal Journals Online | Gratis | . |
| Outlook on Agriculture | 1999- | Sage Journals | Gratis | . |
| Outlook on Science Policy | 2003-2006 | Ebsco Academic | . | . |
| Outlook-12 | 2015-2016 | ProQuest Information and Learning | . | . |
| Outlooks on Pest Management | 2003-2020 | ProQuest Information and Learning | . | . |
| Outra travessia | 2003- | Universidade Federal de Santa Catarina | Gratis | . |
| Outramargem revista de filosofia | 2014- | Universidade Federal de Minas Gerais | Gratis | . |
| Outre-Mers Revue d'histoire | 2001-2013 | Persee | Gratis | Cambio de: Revue fran?aise d'histoire d'outre-mer |
| Outside | 1995- | Mariah Media Inc. | Gratis | . |
| Outskirts | 1996- | University of Western Australia | Gratis | . |
| Outsourced Logistics | 2008-2009 | Ebsco Academic | . | . |
| Outstanding Contributions to Logic | 2014- | Springer Series | . | . |
| Outstate Business | 1992-1994 | ProQuest Information and Learning | . | . |
| OuvirOUver | 2005- | Universidade Federal de Uberlândia | Gratis | . |
| Ouyoujuigakuzasshi | 1928-1944 | J-STAGE, Japan Science and Technology Information Aggregator, Electronic | Gratis | . |
| Ovaciones, Mexico | 2020- | ProQuest Information and Learning | . | . |
| Ovation | 1988-1989 | ProQuest Information and Learning | . | . |
| Over Ruimte en Maatschappij | 2023- | Ghent University | Gratis | . |
| Overdrive | 1993-2020 | Ebsco Academic | . | . |
