Collection
Directory of Open Access Books
109
Making of the Modern World
73
ACS Symposium Series
14
Eighteenth Century Collections Online / ECCO
10
ACS Advances in Chemistry
8
Elsevier ScienceDirect eBooks
6
O'Reilly
5
Editoria Italiana Online
2
Ethnographic Video Online Vol. 1
2
DeGruyter MPG Collection
1
Netlibrary
1
Wiley Online Books
1