Collection
Springer eBooks 2005-
190
Springer Book Archives -2004
176
Directory of Open Access Books
53
Elsevier ScienceDirect eBooks
7
National Center for Biotechnology Information
7
Cambridge Books Online
5
JSTOR Open Access Books
3
O'Reilly
3
DeGruyter MPG Collection
2
OAPEN
1
Oxford Handbook Online
1
Wiley Online Books
1