Collection
Springer eBooks 2005-
33
Springer Book Archives -2004
25
Directory of Open Access Books
10
Eighteenth Century Collections Online / ECCO
5
Brill Nijhoff E-Books Collections 2009-2014
2
JSTOR Open Access Books
2
Cambridge Books Online
1
Elsevier ScienceDirect eBooks
1
O'Reilly
1
OAPEN
1
Wiley Online Books
1