DOAB Directory of Open Access Books
2023
MIT Press Direct eBooks - Open Access
2023
MIT Press Direct to Open Backfile Complete Monographs
2023
DOAB Directory of Open Access Books
2023
DOAB Directory of Open Access Books
2024
J-STAGE Journals (Open Access)
2025-01-01 ~ 현재
OAPEN (Open Access Publishing in European Networks)
2025
DOAB Directory of Open Access Books
2025
Springer Nature Link eBooks - Fully Open Access
2025
ScienceDirect
2022
DOAB Directory of Open Access Books
2010
DOAB Directory of Open Access Books
2025
EBSCO Open Access Journals
2000-01-01 ~ 2003-12-31
OAPEN (Open Access Publishing in European Networks)
2026
DOAB Directory of Open Access Books
2026
Taylor & Francis eBooks (Open Access)
2026