Collection
Directory of Open Access Books
1,680
Springer eBooks 2005-
766
O'Reilly
690
JSTOR Open Access Books
311
OAPEN
255
OECD Books and Papers
255
National Center for Biotechnology Information
185
MIT Press eBook Archive
46
Cambridge Books Online
35
MIT Press Direct to Open
22
DeGruyter MPG Collection
16
Henry Stewart Talks
14
Edward Elgar eBooks Collection Business & Economics
12
Oxford University Press
6
Wiley Online Books
5
JSTOR Books
4
Bloomsbury Education and Childhood Studies
3
Standards and Norms (DIN Media)
3
Springer Book Archives -2004
1