Collection
MIT Press eBook Archive
401
Springer eBooks 2005-
42
O'Reilly
40
Directory of Open Access Books
27
Oxford University Press
21
Elsevier ScienceDirect eBooks
9
Henry Stewart Talks
9
Emerald Business, Management and Economics eBook Collection Archive
7
Netlibrary
5
OAPEN
5
Oxford Handbook Online
4
Cambridge Books Online
3
Elsevier eBook collection Mathematics
2
JSTOR Open Access Books
2
MIT Press Direct to Open
2
Digi20
1
National Center for Biotechnology Information
1
Wiley Online Books
1