Collection
Eighteenth Century Collections Online / ECCO
425
Directory of Open Access Books
342
O'Reilly
334
OAPEN
77
Lecture Notes in Computer Science
59
Springer eBooks 2005-
19
Digi20
18
Making of the Modern World
13
JSTOR Open Access Books
7
wiso-net eBooks
6
Cambridge Books Online
5
Oxford University Press
5
World Bank E-Library Archive
5
DeGruyter MPG Collection
4
Primary Sources for Slavic Studies
3
MIT Press eBook Archive
2
Making of Modern Law / Legal Treatises
2
Nomos
2
ACS Symposium Series
1
Empire Online
1
Music Online Reference
1
Netlibrary
1
Wiley Online Books
1