Database
Proquest Ebook Central Academic Complete
67
EBSCOhost Ebook Collection
47
Springer Complete eBooks
47
NUMDAM
14
Springer e-books
11
Early English Books Online
6
EBSCO Open Access Journals
5
Books at JSTOR
4
Springer Nature Complete Journals
3
ScienceDirect
2
DOAJ: Directory of Open Access Journals
1
JSTOR Arts & Sciences XV Archive Collection
1
Oxford Scholarship Online
1
ScienceDirect Open Access Titles
1
Springer eBooks
1
SpringerLink Journals Fully Open Access
1