Collection
Springer eBooks 2005-
670
Springer Book Archives -2004
191
Directory of Open Access Books
52
DeGruyter MPG Collection
5
JSTOR Open Access Books
5
ACS Symposium Series
4
OAPEN
4
National Center for Biotechnology Information
3
O'Reilly
3
OECD Books and Papers
3
Bloomsbury Education and Childhood Studies
2
World Bank E-Library Archive
2
Cambridge Books Online
1
Elsevier eBook collection Mathematics
1
MIT Press eBook Archive
1