Collection
Springer eBooks 2005-
1,995
Springer Book Archives -2004
1,041
Directory of Open Access Books
524
Elsevier eBook collection Mathematics
183
DeGruyter MPG Collection
161
Cambridge Books Online
127
O'Reilly
55
Henry Stewart Talks
45
Oxford University Press
19
World Bank E-Library Archive
16
National Center for Biotechnology Information
15
Elsevier ScienceDirect eBooks
12
OAPEN
7
Eighteenth Century Collections Online / ECCO
6
ACS Symposium Series
4
International Monetary Fund
3
MIT Press eBook Archive
3
Netlibrary
3
JSTOR Books
2
JSTOR Open Access Books
2
ACS Advances in Chemistry
1
Springer Lecture Notes Archiv 1964-1996
1