Collection
Springer Book Archives -2004
166
Springer eBooks 2005-
129
ACS Symposium Series
26
Directory of Open Access Books
10
Elsevier ScienceDirect eBooks
5
Wiley Online Books
5
O'Reilly
4
RSC eBook Collection 1968-2009
4
Cambridge Books Online
2
DeGruyter MPG Collection
2
MIT Press eBook Archive
1
Oxford University Press
1