Collection
Directory of Open Access Books
1,230
RSC eBook Collection 1968-2009
844
Springer Book Archives -2004
320
Eighteenth Century Collections Online / ECCO
269
ACS Symposium Series
82
Springer eBooks 2005-
81
Wiley Online Books
63
National Center for Biotechnology Information
40
OAPEN
22
DeGruyter MPG Collection
6
ACS Advances in Chemistry
5
Standards and Norms (DIN Media)
5
Elsevier ScienceDirect eBooks
3
O'Reilly
3
Cambridge Books Online
2
JSTOR Open Access Books
2
MIT Press eBook Archive
2
Oxford University Press
2