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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 ...
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 Books - Searchable archive of magazines and books (some full-text, including photograph captions and references to photographs from related articles and content). United States Library of Congress [4] - Searchable archive of historic photographs, maps, performing arts, newspapers.
Google Books (previously known as Google Book Search, Google Print, and by its code-name Project Ocean) [1] is a service from Google that searches the full text of books and magazines that Google has scanned, converted to text using optical character recognition (OCR), and stored in its digital database. [2]
In open access publishing, a journal article is made available free for all on the web by the publisher at the time of publication. Both open and closed journals are sometimes funded by the author paying an article processing charge , thereby shifting some fees from the reader to the researcher or their funder.
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.
For most articles on the website, abstracts are freely available; access to the full text of the article (in PDF, and also HTML for newer publications) often requires a subscription or pay-per-view purchase. [36] In 2019, Elsevier published 49,000 free open access articles and 370 full open access journals.
Academia.edu is a commercial platform for sharing academic research that is uploaded and distributed by researchers from around the world. All academic articles are free to read by visitors, however uploading and downloading articles is restricted to registered users, with additional features accessible only as a paid subscription.