Collection
Springer eBooks 2005-
771
Springer Book Archives -2004
470
Directory of Open Access Books
71
Cambridge Books Online
65
Oxford University Press
18
DeGruyter MPG Collection
13
Lecture Notes in Physics
13
Elsevier eBook collection Mathematics
8
ACS Symposium Series
4
O'Reilly
3
Lecture Notes in Computer Science
2
Lecture Notes in Mathematics
2
OAPEN
2
Eighteenth Century Collections Online / ECCO
1
Elsevier ScienceDirect eBooks
1
MIT Press eBook Archive
1
Wiley Online Books
1