Collection
Directory of Open Access Books
58
OAPEN
22
Oxford University Press
14
Cambridge Books Online
11
JSTOR Open Access Books
9
Brill Nijhoff E-Books Collections 2009-2014
6
World Bank E-Library Archive
5
Oxford Handbook Online
3
Brill Nijhoff E-Books Collections 2006-2008
2
Netlibrary
2
Digi20
1
MIT Press eBook Archive
1