Collection
Springer eBooks 2005-
313
Springer Book Archives -2004
262
Directory of Open Access Books
28
Eighteenth Century Collections Online / ECCO
9
Springer Lecture Notes Archiv 1964-1996
8
Cambridge Books Online
5
O'Reilly
5
Lecture Notes in Physics
4
DeGruyter MPG Collection
2
Elsevier eBook collection Mathematics
1
Making of the Modern World
1
Oxford University Press
1