Collection
Elsevier ScienceDirect eBooks
11
Directory of Open Access Books
8
ACS Symposium Series
3
JSTOR Open Access Books
3
O'Reilly
3
OAPEN
3
Eighteenth Century Collections Online / ECCO
2
DeGruyter MPG Collection
1
Digi20
1
Elsevier eBook collection Mathematics
1
Ethnographic Video Online Vol. 1
1
Making of Modern Law / Legal Treatises
1
National Center for Biotechnology Information
1
Oxford University Press
1