Collection
Directory of Open Access Books
381
Eighteenth Century Collections Online / ECCO
342
OAPEN
118
Making of the Modern World
117
Landolt-Börnstein
14
World Bank E-Library Archive
9
ACS Symposium Series
8
Making of Modern Law / Legal Treatises
8
Cambridge Books Online
4
Digi20
4
Oxford University Press
3
DeGruyter MPG Collection
2
JSTOR Open Access Books
2
O'Reilly
2
ACS Advances in Chemistry
1
Bloomsbury Education and Childhood Studies
1
Emerald Business, Management and Economics eBook Collection Archive
1
Empire Online
1
Mohr Siebeck eBooks
1
Netlibrary
1