Collection
OECD Books and Papers
328
National Center for Biotechnology Information
299
Directory of Open Access Books
263
Springer eBooks 2005-
198
JSTOR Open Access Books
73
Springer Book Archives -2004
50
OAPEN
34
Cambridge Books Online
27
O'Reilly
26
MIT Press eBook Archive
22
DeGruyter MPG Collection
12
ACS Symposium Series
11
Oxford University Press
10
Emerald Business, Management and Economics eBook Collection Archive
9
Edward Elgar eBook Archive
3
World Bank E-Library Archive
3
Oxford Handbook Online
2
ACS Advances in Chemistry
1
Brill Nijhoff E-Books Collections 2009-2014
1
Elsevier ScienceDirect eBooks
1
JSTOR Books
1
Wiley Online Books
1