مكتبة بالانكليزي تحتوي على اكثر من 12000 كتاب مجاني
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A: General Works (Overview)
* B: Philosophy, Psychology, and Religion (Overview)
* C: History: Auxiliary sciences (Overview)
* D: History: General, and Regions Outside the Americas (Overview)
* E: History: United States (General) (Overview)
* F: History: United States (Regional), and the Americas (Overview)
* G: Geography, Anthropology, Folklore, Recreation (Overview)
* H: Social Sciences (Overview)
* J: Political Science (Overview)
* K: Law (Overview)
* L: Education (Overview)
* M: Music (Overview)
* N: Fine Arts (Overview)
* P: Language and Literature (Overview)
* Q: Science (Overview)
* R: Medicine (Overview)
* S: Agriculture (Overview)
* T: Technology (Overview)
* U: Military Science (Overview)
* V: Naval Science (Overview)
* Z: Bibliography and Library Science (Overview)
http://digital.library.upenn.edu/books/