Collection
Cambridge Books Online
21
DeGruyter MPG Collection
6
Eighteenth Century Collections Online / ECCO
595
Elsevier ScienceDirect eBooks
3
Elsevier eBook collection Mathematics
1
Emerald Business, Management and Economics eBook Collection Archive
1
JSTOR Open Access Books
6
MIT Press eBook Archive
18
National Center for Biotechnology Information
1
O'Reilly
230
Oxford Handbook Online
11
Oxford University Press
20
Springer Book Archives -2004
456
Springer eBooks 2005-
253
Wiley Online Books
2