DOAB Directory of Open Access Books
2014
DOAJ: Directory of Open Access Journals
2021-01-01 ~ 현재
OAPEN (Open Access Publishing in European Networks)
2021
DOAB Directory of Open Access Books
2021
OAPEN (Open Access Publishing in European Networks)
1987
ScienceDirect
2008-01-01 ~ 2010-12-31
DOAB Directory of Open Access Books
2014
DOAB Directory of Open Access Books
2018
DOAJ: Directory of Open Access Journals
2009-01-01 ~ 현재
DOAB Directory of Open Access Books
1990
DOAB Directory of Open Access Books
2024