Collection
Cambridge Books Online
9
DeGruyter MPG Collection
3
Digi20
1
Directory of Open Access Books
93
Editoria Italiana Online
4
Eighteenth Century Collections Online / ECCO
2,341
Elsevier eBook collection Mathematics
1
JSTOR Open Access Books
1
Making of the Modern World
5
National Center for Biotechnology Information
1
O'Reilly
1
OAPEN
10
Oxford University Press
4
Springer Book Archives -2004
1,003
Springer eBooks 2005-
900
Standards and Norms (DIN Media)
3
Wiley Online Books
2