2026-05-20T12:16:04Z http://pbc.up.krakow.pl/oai-pmh-repository.xml

oai:pbc.up.krakow.pl:6052 2023-10-18T11:22:12Z PedagogicalDigitalLibrary:Dziedzictwo PedagogicalDigitalLibrary:textbook_museum PedagogicalDigitalLibrary PedagogicalDigitalLibrary:Dziedzictwo:Books PedagogicalDigitalLibrary:textbook_museum:polish PedagogicalDigitalLibrary:textbook_museum:mathematics PedagogicalDigitalLibrary:textbook_museum:primers