OAPEN (Open Access Publishing in European Networks)
2010
DOAB Directory of Open Access Books
2010
Project Muse Open Access ebooks
2010
MIT Press Direct eBooks - Open Access
2010
MIT Press Direct to Open Backfile Complete Monographs
2010
DOAB Directory of Open Access Books
2013
OAPEN (Open Access Publishing in European Networks)
2008
DOAB Directory of Open Access Books
2008
Project Muse Open Access ebooks
2008
MIT Press Direct eBooks - Open Access
2008
MIT Press Direct to Open Backfile Complete Monographs
2008
EBSCO Open Access Journals
1997-01-01 ~ 2008-11-30
DOAJ: Directory of Open Access Journals
2019-01-01 ~ 현재
PubMed Central (PMC)
2019-01-01 ~ 현재
EBSCO Open Access Journals
2019-01-01 ~ 현재
EBSCO Open Access Journals
2004-06-01 ~ 현재
Brill Open e-Books
2026
International Monetary Fund (IMF) eLibrary
2002-01-01 ~ 2002-12-31
International Monetary Fund (IMF) eLibrary
2003-01-01 ~ 2003-12-31
EBSCO Open Access Journals
2003-01-01 ~ 2017-12-31