Collection
O'Reilly
988
Springer eBooks 2005-
652
Springer Book Archives -2004
164
Directory of Open Access Books
108
Emerald Business, Management and Economics eBook Collection Archive
94
Edward Elgar eBook Archive
11
Oxford Handbook Online
11
Cambridge Books Online
5
JSTOR Open Access Books
4
Oxford University Press
3
Elsevier eBook collection Mathematics
2
OAPEN
2
DeGruyter MPG Collection
1
MIT Press eBook Archive
1
National Center for Biotechnology Information
1
Wiley Online Books
1