DOAB Directory of Open Access Books
2026
OAPEN (Open Access Publishing in European Networks)
2026
Taylor & Francis eBooks (Open Access)
2026
OAPEN (Open Access Publishing in European Networks)
2014
DOAB Directory of Open Access Books
2014
Books at JSTOR: Open Access
2014
Brill Open e-Books
2014
DOAB Directory of Open Access Books
2025
OAPEN (Open Access Publishing in European Networks)
2025
Brill Open e-Books
2026
DOAB Directory of Open Access Books
2015
OAPEN (Open Access Publishing in European Networks)
2015
Taylor & Francis eBooks (Open Access)
2015
ScienceDirect
1978
DOAB Directory of Open Access Books
2019