DOAB Directory of Open Access Books
2021
ScienceDirect
2002
ScienceDirect
1971
ScienceDirect
2022
ScienceDirect
1992
ScienceDirect
2025-06-01 ~ 현재
ScienceDirect Open Access Titles
2025-06-01 ~ 현재
DOAB Directory of Open Access Books
2024
ScienceDirect
2025
OAPEN (Open Access Publishing in European Networks)
2020
DOAB Directory of Open Access Books
2020
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2020