Collection
O'Reilly
412
Directory of Open Access Books
48
Eighteenth Century Collections Online / ECCO
43
Springer Book Archives -2004
33
Springer eBooks 2005-
28
Making of the Modern World
11
OAPEN
9
Edward Elgar eBooks Collection Business & Economics
4
Cambridge Books Online
1
Edward Elgar eBook Archive
1
MIT Press eBook Archive
1