Collection
Springer Book Archives -2004
1,456
Springer eBooks 2005-
1,239
Directory of Open Access Books
132
Cambridge Books Online
16
Oxford University Press
9
ACS Symposium Series
7
DeGruyter MPG Collection
3
Elsevier ScienceDirect eBooks
3
Wiley Online Books
3
ACS Advances in Chemistry
2
OAPEN
1
Oxford Handbook Online
1