Collection
OECD Books and Papers
913
Springer eBooks 2005-
306
Springer Book Archives -2004
100
Directory of Open Access Books
34
ACS Symposium Series
11
ACS Advances in Chemistry
3
Oxford University Press
3
Cambridge Books Online
2
MIT Press eBook Archive
2
O'Reilly
2
Brill Nijhoff E-Books Collections 2009-2014
1
DeGruyter MPG Collection
1
Elsevier ScienceDirect eBooks
1
JSTOR Open Access Books
1
National Center for Biotechnology Information
1