Collection
Directory of Open Access Books
328
Springer eBooks 2005-
207
Eighteenth Century Collections Online / ECCO
154
OAPEN
70
Springer Book Archives -2004
41
Making of the Modern World
5
DeGruyter MPG Collection
4
Gale virtual reference library
2
O'Reilly
2
Cambridge Books Online
1
JSTOR Open Access Books
1
Netlibrary
1
Oxford Handbook Online
1