List of academic databases and search engines
This page contains a representative list of major databases and search engines useful in an academic setting for finding and accessing articles in academic journals, repositories, archives, or other collections of scientific and other articles. As the distinction between a database and a search engine is unclear for these complex document retrieval systems, see:
- the general list of search engines for all-purpose search engines that can be used for academic purposes
- bibliographic databases for information about databases giving bibliographic information about finding books and journal articles.
Note that "free" or "subscription" can refer both to the availability of the database or of the journal articles included. This has been indicated as precisely as possible in the lists below.
- This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.
Name | Discipline(s) | Description | Access Cost | Provider(s) |
---|---|---|---|---|
Academic Search | Multidisciplinary | Several versions: Complete, Elite, Premier, and Alumni Edition[1] | Subscription | EBSCO Publishing[2] |
Aerospace & High Technology Database | Aerospace, Aeronautics, Astronautics | Subscription | ProQuest[3] | |
African Journals OnLine (AJOL) | Multidisciplinary | Scholarly journals published in Africa[4] | Free abstracts; Subscription full-text | African Journals OnLine[5] |
AgeLine | Sociology, Gerontology | Includes information on aging-related topics, including economics, public health and policy. | Subscription | EBSCO Publishing[6] |
AGRICOLA: Agricultural Online Access | Agriculture | Free & Subscription | Produced by the United States National Agricultural Library. Free access provided by NAL.[7] Subscription access provided by ProQuest,[8] OVID.[9] | |
AGRIS: Agricultural database | Agriculture | Covers agriculture, forestry, animal husbandry, aquatic sciences and fisheries, human nutrition, extension literature from over 100 participating countries.
Material includes unique grey literature such as unpublished scientific and technical reports, theses, conference papers, government publications, and more. |
Free | Produced by the Food and Agriculture Organization of the United Nations. AGRIS |
Airiti Inc | Multidisciplinary | Subscription | Airiti Inc[10] | |
Analytical Abstracts | Chemistry | Subscription | Royal Society of Chemistry[11] | |
Analytical sciences digital library | Analytical chemistry | Free | National Science Digital Library and the Analytical Chemistry Division of the American Chemical Society[12] | |
Anthropological Index Online | Anthropology | Index only (no abstracts or full-text). | Free | Royal Anthropological Institute[13] |
Anthropological Literature | Anthropology | Free to Harvard faculty, staff and students. Subscription for non-Harvard access. | Maintained by Harvard University. Non-Harvard access provided by OCLC[14] | |
Arachne | Archaeology, Art history | German language | Free | German Archaeological Institute & the University of Cologne[15] |
Arnetminer | Computer Science | Online service used to index and search academic social networks | Free | Tsinghua University[16] |
Arts & Humanities Citation Index | Arts, Humanities | Part of Web of Science | Subscription | Thomson Reuters[17] |
arXiv | Physics, Mathematics, Computer science, Nonlinear sciences, Quantitative biology and Statistics | Repository of electronic pre-prints of papers in the fields of mathematics, physics, astronomy, computer science, quantitative biology, statistics, and quantitative finance. | Free | Cornell University[18] |
Association for Computing Machinery Digital Library | Computer Science, Engineering | Subscription | Association for Computing Machinery[19] | |
Astrophysics Data System | Astrophysics, Geophysics, Physics | Free | Harvard University[20] | |
ATLA Religion Database | Religious studies | Provides information on topics such as biblical studies, world religions, church history, and religion in social issues | Subscription | [21] |
AULIMP: Air University Library's Index to Military Periodicals | Military Science | Free | Air University[22] | |
BASE: Bielefeld Academic Search Engine | Multidisciplinary | Free | Bielefeld University[23] | |
BDD: Diacronia Bibliometric Database | Linguistics, philology | Free abstracts; Subscription full-text and references | Revista Diacronia[24] | |
Beilstein database | Organic chemistry | Subscription | Available from Elsevier under the product name Reaxys[25] | |
Biological Abstracts | Biology | A complete collection of bibliographic references covering life science and biomedical research literature published from more than 4,000 journals internationally. | Subscription | Available from Thomson Reuters[26] |
BioOne | Biology, Ecology, and Environmental Science | A full-text aggregation of more than 180 scientific journals publishing current research in Biodiversity Conservation, Biology, Ecology, Environmental Science, Entomology, Ornithology, Plant Science, and Zoology. | Free abstract & references, Open Access titles, and Subscription | Available from BioOne[27] |
Bioinformatic Harvester | Biology, Bioinformatics | A meta search engine for 50 major bioinformatic databases and projects. | Free | Available from Liebel-Lab KIT Karlsruhe Institute of Technology |
Book Review Index Online | Book reviews | Subscription | Thomson Gale[28] | |
Books In Print | Books | Subscription | R.R. Bowker[29] | |
CAB Abstracts | Applied life sciences | Bibliographic information service providing access to applied life sciences literature. | Subscription | CABI[30] |
Chemical Abstracts Service | Chemistry | Subscription | American Chemical Society[31] | |
Chemisches Zentralblatt Structural Database | Science,Chemistry | web-based retrieval application that provides language independent access to the information contained in Chemisches Zentralblatt | Subscription | Available from the InfoChem [32] |
ChemXSeer | Chemistry | Free | Pennsylvania State University[33] | |
Chinese Social Science Citation Index | Social sciences | Subscription | Nanjing University[34] | |
Cochrane Library | Medicine, Healthcare | Includes reviews of research to promote evidence-based healthcare. | Subscription | Wiley Interscience[35] |
CINAHL: Cumulative Index to Nursing and Allied Health | Nursing, Allied Health | Subscription | EBSCO[36] | |
CiNii | Multidisciplinary | Database of 15 million articles in the Japanese language from 3600 journals. | Free abstracts; Subscription full-text | National Institute of Informatics[37] |
CHBD: Circumpolar Health Bibliographic Database | Medicine | Free | University of Calgary[38] | |
Citebase Search | Mathematics, Computer science, Physics | Semi-autonomous citation index of free online research | Free | University of Southampton[39] |
CiteULike | Computer science | Free | ||
CiteSeer | Computer Science | Replaced by CiteSeerX. | Free | Pennsylvania State University[40] |
CiteSeerX | Computer science, Statistics, Mathematics, becoming Multidisciplinary | Free | Pennsylvania State University[41] | |
CogPrints: Cognitive Sciences Eprint Archives | Science (General) | Free | University of Southampton[42] | |
The Collection of Computer Science Bibliographies | Computer science | Free | Alf-Christian Achilles[43] | |
Compendex | Engineering | Electronic version of Engineering Index. | Subscription | Elsevier[44] |
Current Index to Statistics | Statistics | Limited free search[45] | Subscription | American Statistical Association and the Institute of Mathematical Statistics[46] |
Current Contents | Multidisciplinary | Part of Web of Science. Contains 7 discipline-specific subsets. | Subscription | Thomson Reuters[47] |
Directory of Open Access Journals | Journals | The Directory Of Open Access Journals (DOAJ) lists more than 10,000 open access journals (September 2014) in multiple research areas.[48] | Free | Lund University[49] |
dblp computer science bibliography | Computer science | Comprehensive list of papers from major computer science conferences and journals | Free | Produced by Schloss Dagstuhl - Leibniz Center for Informatics and University of Trier, Germany[50] |
EconBiz | Economics | EconBiz supports research in and teaching of economics with a central entry point for all kinds of subject-specific information and direct access to full texts. | Free | Produced by the ZBW- German National Library of Economics– Leibniz Information Centre for Economics (ZBW)[51] |
EconLit | Economics | The American Economic Association's electronic database, the world's foremost source of references to economic literature. | Subscription | Produced by the American Economic Association.[52] Available from CSA, DIALOG, OCLC, OVID, and AEA.[53] |
EMBASE | Biomedicine, Pharmacology | Biomedical database with a strong focus on drug and pharmaceutical research. | Subscription | Elsevier[54] |
ERIC: Educational Resource Information Center | Education | Education literature and resources. Provides access to over 1.3 million records dating back to 1966. | Free | Produced by the United States Department of Education.[55] Also available by subscription from OCLC, CSA. |
FSTA – Food Science and Technology Abstracts | Food science, Food technology, Nutrition | The world's leading database of information on food science, food technology and nutrition | Subscription | Produced by IFIS Publishing. FSTA can be accessed through EBSCOhost,[56] IHS Inc.,[57] Ovid,[58] Proquest Dialog,[59] STN[60] and Web of Science.[61] |
GENESIS | Women's history | Descriptions of women's history collections from sources in the UK, as well as women's history websites. | Free | London Metropolitan University[62] |
GeoRef | Geosciences | Subscription | American Geosciences Institute | |
Global Health | Public Health | Specialist bibliographic, abstracting and indexing database dedicated to public health research and practice. | Subscription | CABI[63] |
Golm Metabolome Database | Mass spectrometry | The Golm Metabolome Database (GMD) is a reference mass spectra library of biologically active metabolites quantified using gas chromatography (GC) coupled to mass spectrometry (MS). | Free online search; offline use by subscription | Golm Metabolome Database[64] |
Google Scholar | Multidisciplinary | Free | Google[65] | |
GoPubMed | Medicine | GoPubMed, the first knowledge-based search engine for the life sciences industry. | Free | Transinsight[66] |
HubMed | Medicine | An alternative interface to the PubMed medical literature database | Free | Alf Eaton[67] |
IEEE Xplore | Computer Science, Engineering, Electronics | Subscription | IEEE[68] | |
Index Copernicus | Multidisciplinary science | Scientific journal database – the IC Journal Master List – contains currently over 2,500 journals from all over the world, including 700 journals from Poland. The journals registered in this database underwent rigorous, multidimensional parameterization, proving high quality. The Ministry of Science and Higher Education acknowledged the IC Journal Master List by placing it on the list of scored databases, for being indexed in IC JML journals get additional points in the Ministry’s evaluation process.[69] | Free | Index Copernicus International[70] |
Information Bridge: Department of Energy Scientific and Technical Information | Multidisciplinary | The Information Bridge: DOE Scientific and Technical Information provides free public access to over 266,000 full-text documents and bibliographic citations of Department of Energy (DOE) research report literature. Documents are primarily from 1991 forward and were produced by DOE, the DOE contractor community, and/or DOE grantees. Legacy documents are added as they become available in electronic format. | Free | United States Department of Energy, Office of Scientific and Technical Information[71] |
Informit | Multidisciplinary | Australasian aggregator of bibliographic databases and journals | N/A | RMIT Publishing[72] |
IngentaConnect | Multidisciplinary | Free searching; Subscription full-text | Ingenta[73] | |
Indian Citation Index | Multidisciplinary | Indian Citation Index (ICI) is a home grown abstracts and citation database, with multidisciplinary objective knowledge contents from about 1000 top Indian scholarly journals. It provides powerful search engine to fulfill search and evaluation purposes for researchers, policy makers, decision makers etc. | Subscription | ICI[74] |
Inspec | Physics, Engineering, Computer Science | The leading bibliographic database providing abstracts and indexing to the world's scientific and technical papers in physics, electrical engineering, electronics, communications, control engineering, computing, information technology, manufacturing, production, and mechanical engineering. | Subscription | IET[75] |
International Directory of Philosophy | Philosophy | Contains information on university philosophy departments and programs, philosophical societies, research centers, journals, and philosophy publishers in the U.S., Canada, and approximately 130 other countries. | Free search; full access by subscription | Philosophy Documentation Center[76] |
JournalSeek | Multidisciplinary | Open access journals in different language | Links to journal's home page and publishers | JournalSeek[77] |
JSTOR: Journal Storage | Multidisciplinary | JSTOR Collections: Current Journals; Archived Journals (first issue through 3–5 years ago); Books; and Primary Source Collections FREE Resources: 3 articles every 2 weeks (Register and Read Program, archived journals). Also, early journals (prior to 1923 in US, 1870 elswhere) free, no registry necessary. |
Free and Subscription | JSTOR[78] |
Jurn | Multidisciplinary | Jurn is a free-to-use online search tool for finding and downloading free full-text scholarly works. In 2014 Jurn expanded beyond open access journals in the arts and humanities, to also index open journals in ecology, science, biomedical, business and economics. Jurn is actively curated and maintained. | Free | Jurn[79] |
Lesson Planet | Education (K-12) | Over 400,000 teacher-reviewed classroom resources including lesson plans, worksheets, educational videos, and education articles. | Free Abstract; Subscription full-text | Lesson Planet[80] |
LexisNexis | Law (general) | Electronic database for legal and public-records related information | Subscription | Reed Elsevier[81] |
Lingbuzz | Linguistics | A free archive of linguistics articles, with a focus on syntax, semantics, phonology and morphology. | Free | Center for Advanced Study in Theoretical Linguistics, University of Tromsø[82] |
MathSciNet | Mathematics | Available in print as Mathematical Reviews | Subscription | American Mathematical Society[83] |
MedlinePlus | Medicine | Free | Produced by the United States National Library of Medicine, the United States National Institutes of Health, and the United States Department of Health and Human Services[84] | |
Mendeley | Multidisciplinary | The Mendeley research catalog is a crowdsourced database of research documents. Researchers have uploaded nearly 100M documents into the catalog with additional contributions coming directly from subject repositories like Pubmed Central and Arxiv.org or web crawls. | Free | Mendeley[85] |
Merck Index | Chemistry, Biology, Pharmacology | Also available in print. | Subscription | Formerly produced by Merck & Co.,[86] now available from the Royal Society of Chemistry[87] |
Meteorological and Geoastrophysical Abstracts | Meteorology, Astrophysics, Geology | Subscription | Produced by the American Meteorological Society. Available from Dialog[88] and CSA.[89] | |
Microsoft Academic Search | Multidisciplinary | Provides many innovative ways to explore scientific papers, conferences, journals, and authors[90] | Free | Microsoft |
NBER: National Bureau of Economic Research | Economics | Free | National Bureau of Economic Research[91] | |
National Criminal Justice Reference Service[92] | Criminology, Sociology | Abstracts of scholarly journal articles, agency and NGO reports, and conference proceedings | Free | United States Department of Justice, Office of Justice Programs[93] |
National Diet Library Collection | Multidisciplinary | Japanese. Catalog for the National Library of Japan. | N/A | National Diet Library[94] |
OAIster | Multidisciplinary | Free | OCLC[95] | |
OpenSIGLE | Grey literature | Indexes European grey literature. | Free | Institut de l'information scientifique et technique[96] |
Philosophy Documentation Center eCollection | Applied ethics, Philosophy, Religious studies | Journals, series, conference proceedings, and other works from several countries online. | Free abstract & preview; Subscription full-text | Philosophy Documentation Center[97] |
Philosophy Research Index | Philosophy | Index of books, journals, disserations, and other documents | Subscription | Philosophy Documentation Center[97] |
PhilPapers | Philosophy | Free | PhilPapers[98] | |
POIESIS: Philosophy Online Serials | Philosophy, applied ethics, religious studies | Journals and series, online access for institutions with print | Free abstract & preview; Subscription full-text | Philosophy Documentation Center[97] |
POPLINE | Population, Family Planning, Reproductive Health | POPLINE® contains the world’s most comprehensive collection of population, family planning and related reproductive health and development literature. An international resource, POPLINE helps program managers, policy makers, and service providers in low- and middle-income countries and in development-supportive agencies and organizations gain access to journal articles and other scientific, technical, and programmatic publications. | Free | Knowledge for Health, Center for Communication Programs, Johns Hopkins Bloomberg School of Public Health[99] |
Project MUSE | Humanities, social science | Project MUSE is a provider of digital humanities and social science content for the scholarly community. MUSE provides full-text versions of scholarly journals and books. | Subscription | Project MUSE, Johns Hopkins University Press[100] |
PsycINFO | Psychology | The largest resource devoted to peer-reviewed literature in behavioral science and mental health. It contains over 3.7 million records with bibliographic information and extensive indexing, more than 60 million cited references, and has comprehensive coverage dating back to the mid-19th century, with sporadic coverage going back as far as the 16th century. | Subscription | Produced by the APA.[101] Available from several database vendors.[102] |
Psychology's Feminist Voices | Psychology | An online, multimedia digital archive containing the profiles of 250 feminist psychologists who have shaped and continue to transform the discipline of psychology. Profiles are organized in two sections, "Women Past" and "Feminist Presence." All profiles on the Feminist Presence section contain original interview transcripts and video clips with the psychologist discussing their feminist development and academic career. | Free | Based at York University, Toronto, Canada.[103] |
PubChem | Chemistry | Free | National Center for Biotechnology Information and the U.S. National Library of Medicine[104] | |
Pubget | Multidisciplinary | Subscription | Pubget | |
PubMed | Biomedical | A database primarily of references and abstracts on life sciences and biomedical topics | Free | National Institutes of Health and the U.S. National Library of Medicine[105] |
PubPsych | Psychology | PubPsych is a free information retrieval system for psychological resources. It offers a comprehensive and balanced selection of resources from a growing number of international databases with a European focus, covering the needs of academic and professional psychologists. | Free | Leibniz Institute for Psychology Information |
Questia: Online Research Library | Multidisciplinary (Historical) | Subscription | Questia[106] | |
Readers' Guide to Periodical Literature | Journals and Magazines | Coverage: 1983–present. | Subscription | H. W. Wilson Company[107] |
Reader's Guide Retrospective: 1890–1982 | Journals and Magazines | Subscription | H. W. Wilson Company[108] | |
RePEc: Research Papers in Economics | Economics | Free | Volunteer Collaboration[109] | |
Retina medical search | Biomedical | Biomedical resources with special focus for medical professionals.
searches among physician level standard documents eliminating patient level materials. |
Free | Retina medical search[110] |
Rock's Backpages | Music | Primary documents from the history of rock and roll | Subscription. Limited free access with registration. | Backpages Limited[111] |
Russian Science Citation Index | Scientific journals | A bibliographic database of scientific publications in Russian. | Free | Scientific Electronic Library[112] |
SafetyLit | Multidisciplinary | Citations and abstracts of journal articles and reports from researchers working in the more than 35 distinct professional disciplines (architecture - zoology) relevant to preventing unintentional injuries, violence, and self-harm. | Free | Graduate School of Public Health, San Diego State University[113] and the World Health Organization's Department of Violence and Injury Prevention[114] |
Scicademy.org | Science (General) | Scicademy is an open source, student research database for high school and undergraduate students. | Free | Scicademy |
SciELO | Journals | SciELO is a bibliographic database and a model for cooperative electronic publishing in developing countries originally from Brazil. It contains 985 scientific journals from different countries in free and universal access, full-text format. | Free | FAPESP, CNPq and BIREME |
Science.gov | Multidisciplinary | A gateway to government science information and research results. Science.gov provides a search of over 45 scientific databases and 200 million pages of science information with just one query, and is a gateway to over 2000 scientific Websites. | Free | Science.gov Alliance, 18 scientific and technical organizations from 14 federal agencies that contribute to Science.gov. United States Department of Energy, Office of Scientific and Technical Information serves as the operating agent for Science.gov.[115] |
Science Accelerator | Multidisciplinary | A gateway to results of DOE research and development and major R&D accomplishments of interest to DOE. | Free | United States Department of Energy, Office of Scientific and Technical Information.[116] |
Science Citation Index | Science (General) | Part of Web of Science | Subscription | Thomson Reuters[117] |
Scientillion | Physics, Mathematics, Computer Science, Medicine | Search engine for physics and quantitative science. Combining article databases like Pubmed, ArXiv. | Free | Scientillion [118] and AussieEducator |
Scopus | Multidisciplinary | Scopus is the world's largest abstract and citation database of peer-reviewed research literature. It contains over 20,500 titles from more than 5,000 international publishers. While it is a subscription product, authors can review and update their profiles via ORCID.org or by first searching for their profile at the free Scopus author lookup page. | Subscription | Elsevier[120] |
SearchTeam | Multidisciplinary | Students search together collaboratively for scholarly articles and resources | Free | Zakta[121] |
Social Science Citation Index | Social science | Part of Web of Science | Subscription | Thomson Reuters[122] |
Socol@r: Socolar | Multidisciplinary | Scholarly open access resources in different language | Free abstracts; Links to full-text | Socolar[123] |
SPRESI Database | Science,Chemistry | chemical structure and reaction database, product name: SPRESIweb, SPRESImobile | Subscription | Available from InfoChem [124] |
SSRN: Social Science Research Network | Social science | Contains an abstracts database and an electronic paper collection, arranged by discipline. | Free | Social Science Electronic Publishing, Inc.[125] |
INSPIRE-HEP | Physics, (High Energy) | Free | CERN, DESY, Fermilab, SLAC and IHEP [126] | |
SpringerLink | Multidisciplinary | Free abstract & preview; Subscription full-text | Springer[127] | |
Ulrich's Periodicals Directory | Periodicals | Subscription | ProQuest[128] | |
VET-Bib | Social Science, Education | European vocational education and training (VET) literature | Free | European Centre for the Development of Vocational Training[129] |
Web of Science | Multidisciplinary | Includes other products, such as Social Science Citation Index, Science Citation Index, Biological Abstracts & The Zoological Record | Subscription | Thomson Reuters[130] |
WestLaw | Law (General) | Subscription | Thomson Reuters | |
WorldCat | Multidisciplinary | Unified catalog of member libraries' catalogs | Free & Subscription | OCLC[131] |
WorldWideScience | Multidisciplinary | WorldWideScience is a global science gateway composed of national and international scientific databases and portals. WorldWideScience accelerates scientific discovery and progress by providing one-stop searching of databases from around the world. Multilingual WorldWideScience provides real-time searching and translation of globally dispersed multilingual scientific literature. | Free | The WorldWideScience Alliance, a multilateral partnership, consists of participating member countries and provides the governance structure for WorldWideScience. United States Department of Energy, Office of Scientific and Technical Information serves as the operating agent for WorldWideScience.[132] |
Zasshi Kiji Sakuin: Japanese Periodicals Index | Journals | Japanese. | N/A | National Diet Library's Online Catalog,[133] MagazinePlus,[134] CiNii[135] |
Zentralblatt MATH | Mathematics | First three records free without subscription. | Subscription | Springer Science+Business Media[136] |
The Zoological Record | Zoology | Unofficial register of scientific names & papers in Zoology. Coverage 1864–present. | Subscription | Thomson Reuters[137] |
See also
- List of digital library projects
- List of educational video websites
- List of neuroscience databases
- List of online databases
- List of Internet encyclopedias
- List of open-access journals
- List of open-access projects
- List of repositories
References
- ↑ "List of EBSCO databases". Ebscohost.com. Retrieved 2014-08-05.
- ↑ "Academic Search Complete". Ebscohost.com. Retrieved 2014-08-05.
- ↑ Aerospace & High Technology Database Archived November 25, 2009, at the Wayback Machine.
- ↑ Rosenberg, Diana (1 January 2002). "African Journals Online: improving awareness and access". Learned Publishing 15 (1): 51–57. doi:10.1087/095315102753303689. Retrieved 14 November 2011.
- ↑ "African Journals Online (AJOL)". Ajol.info. Retrieved 2014-08-05.
- ↑ "AgeLine, EBSCO Publishing". Ebscohost.com. Retrieved 2012-08-26.
- ↑ " " (2014-05-19). "AGRICOLA (NAL Catalog)". Agricola.nal.usda.gov. Retrieved 2014-08-05.
- ↑ "Agricola". ProQuest. Retrieved 2014-08-05.
- ↑ AGRICOLA (Ovid)
- ↑ "Airiti Inc". Airiti.com. Retrieved 2014-08-05.
- ↑ "Analytical Abstracts". Rsc.org. Retrieved 2014-08-05.
- ↑ "Analytical Sciences Digital Library". Asdlib.org. Retrieved 2014-08-05.
- ↑ "Anthropological Index Online". Aio.anthropology.org.uk. 2014-04-08. Archived from the original on July 7, 2014. Retrieved 2014-08-05.
- ↑ "Anthropological Literature". Hcl.harvard.edu. 2014-07-01. Retrieved 2014-08-05.
- ↑ "Arachne". Arachne.uni-koeln.de. Retrieved 2014-08-05.
- ↑ "Arnetminer.org". Arnetminer.org. Retrieved 2014-08-05.
- ↑ "Arts & Humanities Citation Index". Thomsonreuters.com. 2014-01-27. Retrieved 2014-08-05.
- ↑ "arXiv.org". arXiv.org. Retrieved 2014-08-05.
- ↑ "Association for Computing Machinery". Portal.acm.org. Retrieved 2014-08-05.
- ↑ "Astrophysics Data System". Adswww.harvard.edu. Retrieved 2014-08-05.
- ↑ ATLA Catalog Archived April 7, 2009, at the Wayback Machine.
- ↑ "AULIMP". Dtic.mil. Retrieved 2014-08-05.
- ↑ "BASE". Base-search.net. Retrieved 2014-08-05.
- ↑ "Diacronia". Revista Diacronia. Retrieved 2015-08-08.
- ↑ "Information and Support Site". Reaxys. Retrieved 2012-08-26.
- ↑ Biological Abstracts at Thomson Reuters Archived August 28, 2009, at the Wayback Machine.
- ↑ An Error Occurred Setting Your User Cookie
- ↑ "Book Review Index Online". Gale.cengage.com. Retrieved 2014-08-05.
- ↑ "Books In Print". Books In Print. Retrieved 2014-08-05.
- ↑ "Publishing home | CAB Abstracts". CABI. Retrieved 2012-08-26.
- ↑ "Chemical Abstracts Service". Cas.org. Retrieved 2014-08-05.
- ↑ "InfoChem". InfoChem.de. Retrieved 2016-02-22.
- ↑ "ChemXSeer". Chemxseer.ist.psu.edu. Retrieved 2014-08-05.
- ↑ Chinese Social Science Citation Index (in English) Archived May 3, 2009, at the Wayback Machine.
- ↑ "Cochrane Library". Cochrane Library. Retrieved 2014-08-05.
- ↑ "CINAHL". Ebscohost.com. Retrieved 2014-08-05.
- ↑ "CiNii". CiNii. 2014-07-15. Retrieved 2014-08-05.
- ↑ "Circumpolar Health Bibliographic Database". Aina.ucalgary.ca. Retrieved 2014-08-05.
- ↑ "CiteBase". CiteBase. Retrieved 2014-08-05.
- ↑ "CiteSeer". Citeseer.ist.psu.edu. Retrieved 2014-08-05.
- ↑ "CiteSeerX". Citeseerx.ist.psu.edu. Retrieved 2014-08-05.
- ↑ "Cogprints". Cogprints. Retrieved 2014-08-05.
- ↑ "The Collection of Computer Science Bibliographies". Liinwww.ira.uka.de. Retrieved 2014-08-05.
- ↑ "Compendex". Ei.org. 2013-11-21. Retrieved 2014-08-05.
- ↑ CIS
- ↑ "Current Index to Statistics". Statindex.org. 2013-10-16. Retrieved 2014-08-05.
- ↑ Current Contents Archived October 24, 2009, at the Wayback Machine.
- ↑ "Directory Of Open Access". Retrieved 2 November 2014.
- ↑ DOAJ. "Directory of Open Access Journals". Doaj.org. Retrieved 2014-08-05.
- ↑ "dblp F.A.Q.: What institution is behind dblp?". Retrieved 2015-12-14.
- ↑ "EconBiz". Econbiz.eu. Retrieved 2014-08-05.
- ↑ "EconLit". Aeaweb.org. Retrieved 2014-08-05.
- ↑ "EconLit access providers". Aeaweb.org. Retrieved 2014-08-05.
- ↑ EMBASE Archived February 17, 2010, at the Wayback Machine.
- ↑ "ERIC". Eric.ed.gov. 1964-05-15. Retrieved 2014-08-05.
- ↑ "EBSCOHost - FSTA". EBSCO. Retrieved 2015.
- ↑ "IHC Inc. - FSTA". IHS Inc. Retrieved 2015.
- ↑ "Ovid - FSTA". Ovid. Retrieved 2015.
- ↑ "Dialog - FSTA" (PDF). ProQuest. Retrieved 2015.
- ↑ "STN - FSTA" (PDF). STN. Retrieved 2015.
- ↑ "Web of Science - FSTA". Thomson Reuters. Retrieved 2015.
- ↑ "Genesis". Londonmet.ac.uk. 2014-07-30. Retrieved 2014-08-05.
- ↑ "Publishing home | Global Health". CABI. Archived from the original on November 10, 2013. Retrieved 2012-08-26.
- ↑ Hummel J, Strehmel N, Selbig J, Walther D and Kopka J (2010). "Decision tree supported substructure prediction of metabolites from GC-MS profiles". Metabolomics 6 (2): 322–333. doi:10.1007/s11306-010-0198-7.
- ↑ "Google Scholar". Scholar.google.com. Retrieved 2014-08-05.
- ↑ "GoPubMed". GoPubMed. Retrieved 2014-08-05.
- ↑ "HubMed". HubMed. 2013-08-13. Retrieved 2014-08-05.
- ↑ First Name Middle Name Last Name. "IEEE Xplore". Ieeexplore.ieee.org. Retrieved 2014-08-05.
- ↑ "Journal Master List". Journals.indexcopernicus.com. Retrieved 2014-08-05.
- ↑ "Index Copernicus". Index Copernicus. Retrieved 2014-08-05.
- ↑ "Information Bridge". Osti.gov. Retrieved 2014-08-05.
- ↑ "Informit". Informit. Retrieved 2014-08-05.
- ↑ "IngentaConnect". IngentaConnect. Retrieved 2014-08-05.
- ↑ "Indian Citation Index". Indian Citation Index. Retrieved 2012-08-26.
- ↑ INSPEC Archived February 14, 2007, at the Wayback Machine.
- ↑ "Philosophy Documentation Center". Pdcnet.org. Retrieved 2012-08-26.
- ↑ "A Searchable Database of Online Scholarly Journals". JournalSeek. Retrieved 2012-08-26.
- ↑ JSTOR
- ↑ "Jurn". Jurn. Retrieved 2014-12-26.
- ↑ "Lesson Planet". Lesson Planet. Retrieved 2014-08-05.
- ↑ "LexisNexis Academic". Academic.lexisnexis.com. Retrieved 2014-08-05.
- ↑ "LingBuzz". University of Tromsø. Retrieved 2015-09-13.
- ↑ "MathSciNet". Ams.org. Retrieved 2014-08-05.
- ↑ "MedlinePlus". Nlm.nih.gov. Retrieved 2014-08-05.
- ↑ "Mendeley Research Catalog". Mendeley.com. 2013-04-01. Retrieved 2014-08-05.
- ↑ "The Merck Index". Merck. Retrieved 20 March 2015.
- ↑ "The Merck Index Online". Royal Society of Chemistry. Retrieved 20 March 2015.
- ↑ "Meteorological and Geoastrophysical Abstracts at DIALOG". Library.dialog.com. Retrieved 2014-08-05.
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