Collection
Directory of Open Access Books
11
Oxford University Press
11
JSTOR Open Access Books
4
Cambridge Books Online
3
ACS Advances in Chemistry
2
MIT Press eBook Archive
2
National Center for Biotechnology Information
2
Brill Nijhoff E-Books Collections 2009-2014
1
DeGruyter MPG Collection
1
Netlibrary
1
O'Reilly
1
OAPEN
1