Collection
O'Reilly
11
Directory of Open Access Books
7
Oxford University Press
5
Netlibrary
4
Eighteenth Century Collections Online / ECCO
3
Cambridge Books Online
2
DeGruyter MPG Collection
2
JSTOR Open Access Books
2
Digi20
1
Edward Elgar eBooks Collection Business & Economics
1
Henry Stewart Talks
1
Making of the Modern World
1
National Center for Biotechnology Information
1
World Bank E-Library Archive
1
wiso-net eBooks
1