Collection
Springer eBooks 2005-
220
O'Reilly
90
Springer Book Archives -2004
81
Eighteenth Century Collections Online / ECCO
52
JSTOR Open Access Books
43
Editoria Italiana Online
11
MIT Press eBook Archive
11
Digi20
10
Oxford University Press
8
Cambridge Books Online
7
DeGruyter MPG Collection
5
National Center for Biotechnology Information
3
Oxford Handbook Online
2
World Bank E-Library Archive
1