Collection
Springer eBooks 2005-
61
Directory of Open Access Books
55
O'Reilly
29
Lecture Notes in Computer Science
19
Eighteenth Century Collections Online / ECCO
13
OAPEN
13
Springer Book Archives -2004
13
JSTOR Open Access Books
5
DeGruyter MPG Collection
4
Cambridge Books Online
3
MIT Press eBook Archive
3
Editoria Italiana Online
2
Digi20
1
Elsevier ScienceDirect eBooks
1
Elsevier eBook collection Mathematics
1
Wiley Online Books
1
World Bank E-Library Archive
1