Emerald Open Access Books
2019
DOAB Directory of Open Access Books
2010
DOAB Directory of Open Access Books
2016
ScienceDirect
2020
ScienceDirect
1978
OAPEN (Open Access Publishing in European Networks)
1990
DOAB Directory of Open Access Books
1990
ScienceDirect
1978
ScienceDirect
1978
De Gruyter Brill Open Access eBooks
2024
De Gruyter Brill Open Access eBooks
2024