Collection
Springer eBooks 2005-
983
Springer Book Archives -2004
504
Directory of Open Access Books
305
ACS Symposium Series
94
Wiley Online Books
70
O'Reilly
47
Elsevier ScienceDirect eBooks
13
ACS Advances in Chemistry
12
DeGruyter MPG Collection
7
JSTOR Open Access Books
5
MIT Press eBook Archive
4
OAPEN
4
Oxford University Press
4