Collection
Springer eBooks 2005-
153
Springer Book Archives -2004
45
O'Reilly
16
ACS Symposium Series
6
MIT Press eBook Archive
5
JSTOR Open Access Books
4
National Center for Biotechnology Information
4
Oxford University Press
4
Cambridge Books Online
2
DeGruyter MPG Collection
2
Editoria Italiana Online
2
MIT Press Direct to Open
1
Wiley Online Books
1