Collection
Directory of Open Access Books
2,412
OECD Books and Papers
1,829
Springer eBooks 2005-
953
National Center for Biotechnology Information
383
Springer Book Archives -2004
305
JSTOR Open Access Books
224
O'Reilly
209
OAPEN
179
MIT Press eBook Archive
106
Oxford University Press
98
World Bank E-Library Archive
94
Cambridge Books Online
81
ACS Symposium Series
38
DeGruyter MPG Collection
38
Edward Elgar eBook Archive
36
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
Elsevier eBook collection Mathematics
1
Nomos
1
RSC eBook Collection 1968-2009
1
Springer Protocols Archive 1981-2004
1
Standards and Norms (DIN Media)
1