Collection
RSC eBook Collection 1968-2009
434
Directory of Open Access Books
36
Springer eBooks 2005-
24
Springer Book Archives -2004
19
ACS Symposium Series
13
Wiley Online Books
13
Eighteenth Century Collections Online / ECCO
6
National Center for Biotechnology Information
6
ACS Advances in Chemistry
1
Cambridge Books Online
1
DeGruyter MPG Collection
1
Elsevier ScienceDirect eBooks
1
JSTOR Open Access Books
1
MIT Press eBook Archive
1
OAPEN
1