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Google Books is a partnership project between Google and major libraries such as Harvard University Library, Stanford University Library, the New York Public Library, Princeton University Library, and Oxford University Library, as well as some commercial publishers. It allows you to search the content of hundreds of thousands of books and view the full text of books that are out of copyright and in the public domain, and portions of text from books that are still copyrighted. If a book publisher is directly involved, the publisher determines which portions (table of contents, index, sample chapters) are included and how much can be viewed.