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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.
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...
Though the search engines may be accessed for free, indexed images themselves may be under restricted license. Google Books [3] - Searchable archive of magazines and books (some full-text, including photograph captions and references to photographs from related articles and content).
Search engines harvest the content of open access repositories, constructing a database of worldwide, free of charge available research. [1] [2] [3] Data repositories are the cornerstone for FAIR (findable, accessible, interoperable and reusable) data practices and are used expeditiously within the scientific community. [4]
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]
It's a good idea to start with a search engine, as it will have the most comprehensive coverage. Besides, many of the online databases listed below include free full text. If you're looking for a source that isn't a journal article, try the Find your Source guide. For books, you can also use Special:BookSources to search by ISBN.
Education research and information are essential to improving teaching, learning, and educational decision-making. ERIC provides access to 1.5 million bibliographic records ( citations , abstracts , and other pertinent data) of journal articles and other education-related materials, with hundreds of new records added every week.
Ultrasound research A free preprint service for the focused ultrasound research community <100 2018 Center for Open Science: Frenxiv: Multidisciplinary: French server for preprints. Closed. >100 2018–2022 Center for Open Science: Gates Open Research: Multidisciplinary