Database
EBSCOhost Ebook Collection
15
Proquest Ebook Central Academic Complete
14
Early English Books Online
4
DOAJ: Directory of Open Access Journals
3
Environment Complete
3
Springer Complete eBooks
3
Academic Search Premier
2
Books at JSTOR
2
Springer e-books
2
Springer eBooks
2
ACS Legacy Archives
1
ACS Publications
1
Academic Video Online
1
Adam Matthew Digital Collections
1
Books at JSTOR: Open Access
1
EDP Open Access
1
Early American Imprints
1
Kanopy
1
Medical Heritage Library
1
PubMed Central (PMC) Open Access
1
ScienceDirect
1