Collection
Directory of Open Access Books
51
O'Reilly
31
JSTOR Open Access Books
15
ACS Symposium Series
12
Eighteenth Century Collections Online / ECCO
12
MIT Press eBook Archive
10
Editoria Italiana Online
7
Oxford University Press
7
DeGruyter MPG Collection
6
Cambridge Books Online
4
Making of the Modern World
4
OAPEN
4
Digi20
3
Elsevier ScienceDirect eBooks
3
wiso-net eBooks
2
ACS Advances in Chemistry
1
Central European UP History & Political Science Backlist
1
Ethnographic Video Online Vol. 1
1
Netlibrary
1
Wiley Online Books
1
World Bank E-Library Archive
1