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Alex Catalogue of Electronic Texts
 Bartleby.com
California Digital Library
 CARRIE : a full-text electronic library
Daily Lit
Digital Book Index
Digital Library of Arts and letters
 Directory of Open Access Books (DOAB)
 E-Books Directory
 Encyclopedia of Life: Global access to knowledge about  life on  Earth
Fiction.us
Folger Digital Texts
 Internet Archive
Internet Classics Archive
 ManyBooks.net
National Center for Biotechnology Information Bookshelf
 SciELO
 Science Books Online
 Scribd
Springer
 Stanford Encyclopedia of Philosophy (SEP)
 The Complete Works of William Shakespeare
 The Internet Archive Ebook and Texts Archive
 The Internet Classics Archive
 Public Domain Reprints
 UC Press E-Books Collection, 1982-2004
Wiley online library
 World of Science
 World Public Library