Content Provider
Jagiellonian University Repository
9
Geological Quarterly
6
Digital Repository of Scientific Institutes (RCIN)
5
The Repository of the University of Silesia (RE-BUŚ)
4
MCS University Digital Library
2
Nicolaus Copernicus University (UMK) Torun: RUM@K
2
ScienceDirect (Elsevier - via Crossref)
2
Unknown
2
BBC - Bałtycka Digital Library (Poland)
1
Centre for Open Science: CeON Repository
1
Pedagogical University of Cracow: Pedagogical Digital Library
1
Silesian Digital Library
1
Uniwersytet Pedagogiczny w Krakowie
1
Zenodo
1