Collection
Springer eBooks 2005-
448
Springer Book Archives -2004
231
MIT Press eBook Archive
128
Oxford University Press
121
Directory of Open Access Books
28
Cambridge Books Online
20
Netlibrary
7
Oxford Handbook Online
7
OAPEN
5
Digi20
4
Eighteenth Century Collections Online / ECCO
4
JSTOR Open Access Books
3
Elsevier ScienceDirect eBooks
2
National Center for Biotechnology Information
2
O'Reilly
2
Editoria Italiana Online
1
Edward Elgar eBook Archive
1
Edward Elgar eBooks Collection Business & Economics
1
Wiley Online Books
1