Collection
Directory of Open Access Books
77
National Center for Biotechnology Information
38
ACS Symposium Series
10
Eighteenth Century Collections Online / ECCO
6
Digi20
2
Duncker & Humblot eBooks 2007-
2
Elsevier ScienceDirect eBooks
2
Henry Stewart Talks
2
DeGruyter MPG Collection
1
Making of the Modern World
1
Mohr Siebeck eBooks
1
OAPEN
1
Oxford University Press
1