Collection
Eighteenth Century Collections Online / ECCO
547
Springer eBooks 2005-
32
Springer Book Archives -2004
26
JSTOR Open Access Books
25
DeGruyter MPG Collection
15
Directory of Open Access Books
14
OAPEN
8
Standards and Norms (DIN Media)
2
ACS Advances in Chemistry
1
Making of the Modern World
1
Nomos
1