Collection
Directory of Open Access Books
403
ACS Symposium Series
149
O'Reilly
63
National Center for Biotechnology Information
42
ACS Advances in Chemistry
18
wiso-net eBooks
13
Henry Stewart Talks
11
Cambridge Books Online
4
Making of the Modern World
3
Mohr Siebeck eBooks
3
World Bank E-Library Archive
3
Emerald Business, Management and Economics eBook Collection Archive
2
Oxford University Press
2
DeGruyter MPG Collection
1
Eighteenth Century Collections Online / ECCO
1
MIT Press eBook Archive
1
Netlibrary
1
OAPEN
1
Oxford Handbook Online
1