Collection
Eighteenth Century Collections Online / ECCO
160
Springer eBooks 2005-
107
Springer Book Archives -2004
88
O'Reilly
33
Directory of Open Access Books
22
Making of the Modern World
11
National Center for Biotechnology Information
4
JSTOR Open Access Books
2
World Bank E-Library Archive
2
DeGruyter MPG Collection
1
Elsevier ScienceDirect eBooks
1
Henry Stewart Talks
1
OAPEN
1
Oxford University Press
1