Collection
Directory of Open Access Books
149
ACS Symposium Series
47
Landolt-Börnstein
35
Henry Stewart Talks
24
Making of the Modern World
18
Oxford University Press
15
ACS Advances in Chemistry
14
OAPEN
14
JSTOR Open Access Books
7
Digi20
4
Cambridge Books Online
3
World Bank E-Library Archive
2
DeGruyter MPG Collection
1
Eighteenth Century Collections Online / ECCO
1
Elsevier eBook collection Mathematics
1
Emerald Business, Management and Economics eBook Collection Archive
1
MIT Press eBook Archive
1
O'Reilly
1
Oxford Handbook Online
1
Social Theory (Alexander Street Press)
1