Collection
Springer eBooks 2005-
568
Springer Book Archives -2004
333
Cambridge Books Online
118
Lecture Notes in Computer Science
65
Elsevier eBook collection Mathematics
44
O'Reilly
36
DeGruyter MPG Collection
24
Springer Lecture Notes Archiv 1964-1996
10
Directory of Open Access Books
9
Lecture Notes in Mathematics
7
Oxford University Press
3
Wiley Online Books
3
MIT Press eBook Archive
2
JSTOR Open Access Books
1
OAPEN
1