Database
EBSCOhost Ebook Collection
53
Proquest Ebook Central Academic Complete
35
Academic Video Online
27
Springer Complete eBooks
21
EBSCO Open Access Journals
13
PubMed Central (PMC) Open Access
12
DOAJ: Directory of Open Access Journals
9
Springer e-books
5
ScienceDirect
4
Springer eBooks
4
Books at JSTOR
3
Springer Complete Nature.com
3
Academic Search Premier
2
American Association for Cancer Research (AACR) Journal COMBO
2
SAGE Journals
2
ScienceDirect Open Access Titles
2
Springer Nature Complete Journals
2
SpringerLink Journals Fully Open Access
2
Wiley Online Library Open Access
2
Adam Matthew Digital Collections
1
Bentham Open - Journals
1
BioMed Central
1
De Gruyter Open Journals
1
Hindawi Open Access Journals
1
Oxford Scholarship Online
1
Wiley Online Library Free Journal Backfiles (formerly Blackwell Synergy)
1
nature.com Journals Fully Open Access
1