OAPEN (Open Access Publishing in European Networks)
2025
Books at JSTOR: Open Access
2025
DOAB Directory of Open Access Books
2025
DOAB Directory of Open Access Books
2019
DOAB Directory of Open Access Books
2009
OAPEN (Open Access Publishing in European Networks)
2024
DOAB Directory of Open Access Books
2024
OAPEN (Open Access Publishing in European Networks)
2016
DOAB Directory of Open Access Books
2016
DOAB Directory of Open Access Books
2019
OAPEN (Open Access Publishing in European Networks)
2007
DOAB Directory of Open Access Books
2007
Books at JSTOR: Open Access
2007
Project Muse Open Access ebooks
2007
DOAB Directory of Open Access Books
1986
EBSCO Open Access Journals
2000-01-01 ~ 현재