HathiTrust | hathitrust.org
HathiTrust Digital Library – Millions of books online
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Anna’s Archive | annas-archive.org
The world’s largest open-source open-data library. Mirrors Sci-Hub, Library Genesis, Z-Library, and more.
Pirate Library Mirror | pilimi.org
出家如初，成佛有余
Storynory | storynory.com
BookYards | bookyards.com
epubBooks | epubbooks.com
LOC美国国会图书馆 | loc.gov
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Gutenberg | gutenberg.org
Free eBooks | Project Gutenberg