Collection
Springer eBooks 2005-
606
Directory of Open Access Books
370
Springer Book Archives -2004
230
OAPEN
16
National Center for Biotechnology Information
5
Cambridge Books Online
4
Elsevier ScienceDirect eBooks
4
O'Reilly
3
JSTOR Open Access Books
2
MIT Press eBook Archive
2
DeGruyter MPG Collection
1
Edward Elgar eBook Archive
1
Oxford University Press
1
Wiley Online Books
1