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  2. List of academic databases and search engines - Wikipedia

    en.wikipedia.org/wiki/List_of_academic_databases...

    the article about 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.

  3. PubMed - Wikipedia

    en.wikipedia.org/wiki/PubMed

    PubMed is a free database including primarily the MEDLINE database of references and abstracts on life sciences and biomedical topics. The United States National Library of Medicine (NLM) at the National Institutes of Health maintains the database as part of the Entrez system of information retrieval.

  4. Directory of Open Access Journals - Wikipedia

    en.wikipedia.org/wiki/Directory_of_Open_Access...

    At the end of the process (December 2017), close to 5,000 journals, out of the 11,600 indexed in May 2016, had been removed from their database, in majority for failure to reapply. [4] [5] [6] Notwithstanding the substantial cleanup, the number of journals included in DOAJ has continued to grow, to reach 14,299 as of 3 March 2020. [7]

  5. List of open-access journals - Wikipedia

    en.wikipedia.org/wiki/List_of_open-access_journals

    This is a list of open-access journals by field. The list contains notable journals which have a policy of full open access. It does not include delayed open access journals, hybrid open access journals, or related collections or indexing services.

  6. Wikipedia:List of free online resources - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:List_of_free...

    Wikiversity - sister project that provides information on most academic subjects; Footnote - historic documents through their partnerships with The National Archives, the Library of Congress and other institutions (partly free) Google Scholar - provides a simple way to broadly search for scholarly literature

  7. OAIster - Wikipedia

    en.wikipedia.org/wiki/OAIster

    OAIster is an online combined bibliographic catalogue of open access material aggregated using OAI-PMH. [1]It began at the University of Michigan in 2002 funded by a grant from the Andrew W. Mellon Foundation and with the purpose of establishing a retrieval service for publicly available digital library resources provided by the research library community.

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