Collection
Springer eBooks 2005-
51
Springer Book Archives -2004
29
Directory of Open Access Books
13
O'Reilly
12
Edward Elgar eBook Archive
7
OAPEN
4
Elsevier Handbooks in Economics
3
International Monetary Fund
2
World Bank E-Library Archive
2
MIT Press eBook Archive
1
National Center for Biotechnology Information
1