Collection
Directory of Open Access Books
1,687
Digi20
402
OAPEN
353
DeGruyter MPG Collection
220
Making of the Modern World
78
Eighteenth Century Collections Online / ECCO
39
Springer eBooks 2005-
30
Springer Book Archives -2004
28
National Center for Biotechnology Information
18
Primary Sources for Slavic Studies
9
Nomos
7
Ethnographic Video Online Vol. 1
6
Mohr Siebeck eBooks
5
JSTOR Open Access Books
2
beck-elibrary
2
Cambridge Books Online
1
MIT Press eBook Archive
1