Collection
Directory of Open Access Books
90
Oxford University Press
55
MIT Press eBook Archive
43
O'Reilly
19
National Center for Biotechnology Information
12
OAPEN
11
Cambridge Books Online
9
Springer eBooks 2005-
9
Netlibrary
7
Eighteenth Century Collections Online / ECCO
6
Digi20
5
DeGruyter MPG Collection
3
Elsevier ScienceDirect eBooks
3
Making of the Modern World
3
Editoria Italiana Online
2
JSTOR Open Access Books
2
Henry Stewart Talks
1
MIT Press Direct to Open
1
Oxford Handbook Online
1