Collection
Eighteenth Century Collections Online / ECCO
264
National Center for Biotechnology Information
211
Directory of Open Access Books
93
World Bank E-Library Archive
18
Oxford University Press
11
Springer eBooks 2005-
9
ACS Symposium Series
8
Netlibrary
7
O'Reilly
7
Henry Stewart Talks
4
Making of Modern Law / Legal Treatises
4
Cambridge Books Online
3
MIT Press eBook Archive
3
Elsevier ScienceDirect eBooks
2
Karger eBooks Collection 1997-2013
2
Making of the Modern World
2
ACS Advances in Chemistry
1
Anthropology Online
1
Digi20
1
JSTOR Open Access Books
1
Nomos
1
OAPEN
1
Oxford Handbook Online
1