Database
Proquest Ebook Central Academic Complete
275
EBSCOhost Ebook Collection
221
Springer Complete eBooks
127
Academic Video Online
68
Springer e-books
30
Springer eBooks
12
Springer Complete Nature.com
8
Academic Search Premier
7
Springer Nature Complete Journals
6
Wiley Online Library Database Model
6
DOAJ: Directory of Open Access Journals
4
Oxford Scholarship Online
4
Wiley-Blackwell Backfiles (PALCI)
4
EBSCO Open Access Journals
3
Early English Books Online
3
PubMed Central (PMC) Open Access
2
ScienceDirect
2
Bentham Open - Journals
1
ScienceDirect Open Access Titles
1
Wiley Online Library Free Journal Backfiles (formerly Blackwell Synergy)
1