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BASE: Bielefeld Academic Search Engine [30] Multidisciplinary: 259,497,239 Metadata for 260 million documents from more than 8,000 content providers Free Bielefeld University: Book Review Index Online: Book reviews: 5,600,000 Reviews of periodicals and books – including those on tape and electronic media Subscription Thomson Gale: Books in ...
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 - Searchable archive of magazines and books (some full-text, including photograph captions and references to photographs from related articles and content).
Online Books Page - repository of out-of-copyright, full-text e-books, onlinebooks.library.upenn.edu; Project Gutenberg - 30,000 e-books, gutenberg.org; Google Scholar - index of both free, and paywalled academic articles, scholar.google.com; Internet Public Library - search engine of resources maintained by volunteer librarians, ipl.org
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.
The program can search for a word or a phrase, including misspellings or gibberish. [5] The n-grams are matched with the text within the selected corpus, and if found in 40 or more books, are then displayed as a graph. [6] The Google Books Ngram Viewer supports searches for parts of speech and wildcards. [6] It is routinely used in research. [7 ...
Open access articles can be found with a web search, using any general search engine or those specialized for the scholarly and scientific literature, such as Google Scholar, OAIster, base-search.net, [264] and CORE [265] Many open-access repositories offer a programmable interface to query their content.
A portion of the expense of college textbooks is offset by the easy access to material provided by open source textbooks. While certain open source textbooks can be used for free, others have a nominal usage fee. A digital copy of a printed book that can be read on computers, tablets, and smartphones is called an electronic book, or ebook for ...
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