Collection
Directory of Open Access Books
327
Eighteenth Century Collections Online / ECCO
236
O'Reilly
206
Springer eBooks 2005-
84
Making of the Modern World
70
Springer Book Archives -2004
57
ACS Symposium Series
20
OAPEN
16
JSTOR Open Access Books
12
Cambridge Books Online
3
Editoria Italiana Online
3
ACS Advances in Chemistry
2
DeGruyter MPG Collection
2
Digi20
2
Making of Modern Law / Legal Treatises
2
Wiley Online Books
2
MIT Press eBook Archive
1
National Center for Biotechnology Information
1
Nomos
1