Collection
Directory of Open Access Books
2,256
OECD Books and Papers
1,804
Springer eBooks 2005-
889
National Center for Biotechnology Information
362
Springer Book Archives -2004
312
JSTOR Open Access Books
223
O'Reilly
203
OAPEN
181
World Bank E-Library Archive
159
MIT Press eBook Archive
102
Oxford University Press
97
Cambridge Books Online
77
ACS Symposium Series
38
Edward Elgar eBook Archive
36
DeGruyter MPG Collection
35
Emerald Business, Management and Economics eBook Collection Archive
30
Elsevier ScienceDirect eBooks
11
Oxford Handbook Online
9
Wiley Online Books
6
Brill Nijhoff E-Books Collections 2006-2008
5
Brill Nijhoff E-Books Collections 2009-2014
5
ACS Advances in Chemistry
2
Bloomsbury Education and Childhood Studies
2
JSTOR Books
2
MIT Press Direct to Open
2
Elsevier eBook collection Mathematics
1
RSC eBook Collection 1968-2009
1
Springer Protocols Archive 1981-2004
1
Standards and Norms (DIN Media)
1