Collection
Springer eBooks 2005-
162
Springer Book Archives -2004
125
MIT Press eBook Archive
33
Oxford University Press
29
Directory of Open Access Books
25
Cambridge Books Online
12
OAPEN
10
Elsevier ScienceDirect eBooks
4
Oxford Handbook Online
4
JSTOR Open Access Books
3
Netlibrary
3
Digi20
2
O'Reilly
2
DeGruyter MPG Collection
1
Editoria Italiana Online
1
Wiley Online Books
1