OAPEN (Open Access Publishing in European Networks)
2013
DOAB Directory of Open Access Books
2013
DOAB Directory of Open Access Books
2013
De Gruyter Brill Open Access eBooks
2009
DOAB Directory of Open Access Books
1991
De Gruyter Brill Open Access eBooks
1991
DOAB Directory of Open Access Books
1986
DOAB Directory of Open Access Books
2011
OAPEN (Open Access Publishing in European Networks)
2013
DOAB Directory of Open Access Books
2013
OAPEN (Open Access Publishing in European Networks)
2014
Books at JSTOR: Open Access
2014
DOAB Directory of Open Access Books
2016
OAPEN (Open Access Publishing in European Networks)
2020
DOAB Directory of Open Access Books
2020
EBSCO Open Access Journals
1986-01-01 ~ 현재