Collection
Directory of Open Access Books
670
Springer eBooks 2005-
313
Springer Book Archives -2004
163
ACS Symposium Series
141
Landolt-Börnstein
97
Eighteenth Century Collections Online / ECCO
58
ACS Advances in Chemistry
33
National Center for Biotechnology Information
31
O'Reilly
27
Elsevier ScienceDirect eBooks
18
Oxford University Press
15
Cambridge Books Online
12
Henry Stewart Talks
12
MIT Press eBook Archive
12
Wiley Online Books
5
DeGruyter MPG Collection
3
Making of the Modern World
3
Lecture Notes in Physics
2
Oxford Handbook Online
2
Making of Modern Law / Legal Treatises
1
OAPEN
1