The site has indexed more than 20 million titles, with the goal of having a listing for every book ever published. The listings include 1.7 million books in the public domain. You can download many of these in a variety of formats – PDF, ePub, MOBI, DAISY, DjVu and ASCII text. Others can be “borrowed” by providing an email address for checkout. Note that some titles are still copyright protected and have links to sites for purchase.
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