Collection
Springer eBooks 2005-
237
Springer Book Archives -2004
233
Directory of Open Access Books
65
Eighteenth Century Collections Online / ECCO
63
Making of the Modern World
20
ACS Symposium Series
5
OAPEN
5
Karger eBooks Collection 1997-2013
4
National Center for Biotechnology Information
4
JSTOR Open Access Books
3
Wiley Online Books
2
Henry Stewart Talks
1