Collection
Directory of Open Access Books
252
OECD Books and Papers
213
Springer eBooks 2005-
140
Springer Book Archives -2004
39
O'Reilly
11
OAPEN
10
JSTOR Open Access Books
7
National Center for Biotechnology Information
5
Cambridge Books Online
3
DeGruyter MPG Collection
3
Emerald Business, Management and Economics eBook Collection Archive
3
Edward Elgar eBook Archive
1