2026-06-09T20:15:52Z http://pbc.up.krakow.pl/oai-pmh-repository.xml

oai:pbc.up.krakow.pl:8089 2023-11-08T10:26:54Z PedagogicalDigitalLibrary:Dziedzictwo PedagogicalDigitalLibrary:textbook_museum PedagogicalDigitalLibrary:muzeum_bgup PedagogicalDigitalLibrary PedagogicalDigitalLibrary:Dziedzictwo:Books PedagogicalDigitalLibrary:textbook_museum:mathematics