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26
Directory of Open Access Journals: DOAJ Articles
8
Geological Quarterly
6
AMUR - Adam Mickiewicz University Repository, Poznan
3
Adam Mickiewicz University in Poznań: PRESSto
3
Czasopisma UKSW (Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie)
3
Scientific e-Journals UMCS (University of Maria Curie-Skłodowska)
3
University Scientific Journals University of Gdansk (UGN)
3
Portal Czasopism Naukowych (E-Journals)
2
Silesian Digital Library
2
University of Lodz Repository (RUŁ)
2
University of Maria Curie-Skłodowska (UMCS): Scientific e-Journals
2
CNS Scientific Journals Online
1
Centre for Open Science: CeON Repository
1
ISS PAS Journals (Institute of Slavic Studies, Polish Academy of Sciences)
1
Journals University of Lodz
1
MCS University Digital Library
1
Nicolaus Copernicus University (UMK) Torun: RUM@K
1
The Repository of the University of Silesia (RE-BUŚ)
1
University of Rzeszów (UR): Repository
1
Uniwersytet Zielonogórski: Zielonogórska Biblioteka Cyfrowa
1