Collection
Directory of Open Access Books
122
Oxford University Press
17
Making of Modern Law / Legal Treatises
12
Cambridge Books Online
10
National Center for Biotechnology Information
10
OAPEN
8
Eighteenth Century Collections Online / ECCO
5
JSTOR Open Access Books
4
World Bank E-Library Archive
4
Digi20
3
ACS Advances in Chemistry
2
ACS Symposium Series
2
DeGruyter MPG Collection
2
Editoria Italiana Online
2
Edward Elgar eBooks Collection Business & Economics
2
Emerald Business, Management and Economics eBook Collection Archive
2
Empire Online
2
Making of the Modern World
2
Netlibrary
2
MIT Press eBook Archive
1
O'Reilly
1