2024-03-29T11:27:52Z
http://pbc.up.krakow.pl/oai-pmh-repository.xml
oai:pbc.up.krakow.pl:6052
2023-10-18T11:22:12Z
PedagogicalDigitalLibrary:textbook_museum PedagogicalDigitalLibrary:Dziedzictwo PedagogicalDigitalLibrary PedagogicalDigitalLibrary:Dziedzictwo:Books PedagogicalDigitalLibrary:textbook_museum:polish PedagogicalDigitalLibrary:textbook_museum:mathematics PedagogicalDigitalLibrary:textbook_museum:primers