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2016
DOAB Directory of Open Access Books
2016
DOAB Directory of Open Access Books
2024
DOAJ: Directory of Open Access Journals
2019-01-01 ~ 현재
EBSCO Open Access Journals
2019-10-01 ~ 현재
DOAB Directory of Open Access Books
2020
DOAB Directory of Open Access Books
2016
ScienceDirect
1965
ScienceDirect
1975
ScienceDirect
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ScienceDirect
1966