Collection
Springer Book Archives -2004
459
Springer eBooks 2005-
257
Cambridge Books Online
77
DeGruyter MPG Collection
35
Elsevier eBook collection Mathematics
20
Springer Lecture Notes Archiv 1964-1996
13
Directory of Open Access Books
6
O'Reilly
4
Elsevier ScienceDirect eBooks
1
JSTOR Open Access Books
1
Oxford University Press
1