Collection
National Center for Biotechnology Information
98
Making of the Modern World
13
JSTOR Open Access Books
11
Directory of Open Access Books
9
O'Reilly
6
Cambridge Books Online
3
Eighteenth Century Collections Online / ECCO
3
Oxford University Press
2
Empire Online
1
Making of Modern Law / Legal Treatises
1
OAPEN
1
World Bank E-Library Archive
1