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2026
DOAB Directory of Open Access Books
2026
Springer Nature Link eBooks - Fully Open Access
2026
DOAB Directory of Open Access Books
2018
ScienceDirect
1990
ScienceDirect
2026-09-01 ~ 현재
ScienceDirect Open Access Titles
2026-09-01 ~ 현재
ScienceDirect
2021
DOAB Directory of Open Access Books
2024
OAPEN (Open Access Publishing in European Networks)
2013
Taylor & Francis eBooks (Open Access)
2013
OAPEN (Open Access Publishing in European Networks)
2013
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ScienceDirect
2019
DOAB Directory of Open Access Books
2024