OAPEN (Open Access Publishing in European Networks)
2014
DOAB Directory of Open Access Books
2014
Books at JSTOR: Open Access
2014
DOAB Directory of Open Access Books
2019
OAPEN (Open Access Publishing in European Networks)
2021
DOAB Directory of Open Access Books
2021
OAPEN (Open Access Publishing in European Networks)
2020
De Gruyter Brill Open Access eBooks
2020
DOAB Directory of Open Access Books
2020
OAPEN (Open Access Publishing in European Networks)
2026
DOAB Directory of Open Access Books
2026
OAPEN (Open Access Publishing in European Networks)
2021
DOAB Directory of Open Access Books
2021
Books at JSTOR: Open Access
2021
DOAB Directory of Open Access Books
2023
EBSCO Open Access Journals
1998-01-01 ~ 2004-12-31