Collection
O'Reilly
239
Cambridge Books Online
11
Oxford University Press
9
National Center for Biotechnology Information
8
Oxford Handbook Online
5
Digi20
3
Directory of Open Access Books
3
Eighteenth Century Collections Online / ECCO
3
Emerald Business, Management and Economics eBook Collection Archive
3
JSTOR Open Access Books
3
MIT Press eBook Archive
3
DeGruyter MPG Collection
2
Edward Elgar eBook Archive
2
Edward Elgar eBooks Collection Business & Economics
2
Netlibrary
2
Social Theory (Alexander Street Press)
2
OAPEN
1
World Bank E-Library Archive
1