Collection
Springer eBooks 2005-
2,766
Springer Book Archives -2004
2,129
Cambridge Books Online
37
DeGruyter MPG Collection
32
Directory of Open Access Books
25
Elsevier eBook collection Mathematics
19
O'Reilly
7
OAPEN
6
Oxford University Press
5
Elsevier ScienceDirect eBooks
4
JSTOR Open Access Books
1
MIT Press eBook Archive
1
Netlibrary
1
Springer Lecture Notes Archiv 1964-1996
1