Collection
Springer eBooks 2005-
316
World Bank E-Library Archive
112
ACS Symposium Series
95
Directory of Open Access Books
54
Springer Book Archives -2004
24
ACS Advances in Chemistry
17
Eighteenth Century Collections Online / ECCO
17
International Monetary Fund
11
Lecture Notes in Physics
11
Cambridge Books Online
9
O'Reilly
8
Oxford University Press
5
Landolt-Börnstein
3
National Center for Biotechnology Information
3
Wiley Online Books
3
Elsevier eBook collection Mathematics
2
MIT Press eBook Archive
2
JSTOR Open Access Books
1
OAPEN
1