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Internet Archive is a non-profit which digitizes over 1000 books a day, as well as mirrors books from Google Books and other sources. As of May 2011, it hosted over 2.8 million public domain books, greater than the approximate 1 million public domain books at Google Books. [132]
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 ...
Citation impact or citation rate is a measure of how many times an academic journal article or book or ... 38.1, 2016) were only cited 10 ... by Google Scholar. More ...
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.
The overall number of journals contained in the WOS database increased from around 8,500 in 2010 to around 9,400 in 2020, while the number of articles published increased from around 1.1 million in 2010 to 1.8 million in 2020. [48] Most scientific research is initially published in scientific journals and considered to be a primary source.
Author-level metrics are citation metrics that measure the bibliometric impact of individual authors, researchers, academics, and scholars. Many metrics have been developed that take into account varying numbers of factors (from only considering the total number of citations, to looking at their distribution across papers or journals using statistical or graph-theoretic principles).
Assessing the citation impact of books: The role of Google Books, Google Scholar, and Scopus. Journal of the American Society for Information Science and Technology, 62(11), 2147–2164. Oltersdorf, J. (2013).
Google Play Books, formerly Google eBooks, is an ebook digital distribution service operated by Google, part of its Google Play product line. Users can purchase and download ebooks and audiobooks from Google Play , which offers over five million titles, with Google claiming it to be the "largest ebooks collection in the world".