2026-10-12T04:31:35Z http://pbc.up.krakow.pl/oai-pmh-repository.xml

oai:pbc.up.krakow.pl:2124 2023-10-04T13:45:55Z PedagogicalDigitalLibrary:Dziedzictwo PedagogicalDigitalLibrary:muzeum_bgup PedagogicalDigitalLibrary:textbook_museum PedagogicalDigitalLibrary PedagogicalDigitalLibrary:Dziedzictwo:Books PedagogicalDigitalLibrary:textbook_museum:mathematics