Collection
Digi20
116
Directory of Open Access Books
65
JSTOR Open Access Books
11
OAPEN
11
Eighteenth Century Collections Online / ECCO
8
DeGruyter MPG Collection
7
Der Literarische Expressionismus Online
2
Editoria Italiana Online
2
Making of the Modern World
2
Cambridge Books Online
1
Netlibrary
1
O'Reilly
1
Oxford University Press
1