2024-03-19T08:54:17Z
https://kpbc.umk.pl/oai-pmh-repository.xml
oai:kpbc.umk.pl:46874
2010-05-05T11:37:32Z
KujawskoPomorskaDigitalLibrary:EducationalMaterials:Mathematics KujawskoPomorskaDigitalLibrary:EducationalMaterials KujawskoPomorskaDigitalLibrary:EducationalMaterials:Physics KujawskoPomorskaDigitalLibrary