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