Collection
Springer eBooks 2005-
1,117
Springer Book Archives -2004
636
Directory of Open Access Books
59
National Center for Biotechnology Information
46
Digi20
17
O'Reilly
9
Oxford University Press
9
OAPEN
7
Oxford Handbook Online
5
Cambridge Books Online
3
Karger eBooks Collection 1997-2013
3
wiso-net eBooks
3
MIT Press eBook Archive
2
DeGruyter MPG Collection
1
Henry Stewart Talks
1
JSTOR Open Access Books
1
Nomos
1