Collection
Cambridge Books Online
1
Directory of Open Access Books
48
Edward Elgar eBook Archive
1
Edward Elgar eBooks Collection Business & Economics
4
Eighteenth Century Collections Online / ECCO
43
MIT Press eBook Archive
1
Making of the Modern World
11
O'Reilly
429
OAPEN
9
Springer Book Archives -2004
25
Springer eBooks 2005-
31