Collection
Springer eBooks 2005-
53
Springer Book Archives -2004
10
Directory of Open Access Books
9
Cambridge Books Online
4
Elsevier eBook collection Mathematics
3
Bloomsbury Education and Childhood Studies
2
Edward Elgar eBook Archive
2
National Center for Biotechnology Information
2
OAPEN
2
DeGruyter MPG Collection
1
JSTOR Open Access Books
1
Nomos
1