2024-03-19T02:04:16Z
https://kpbc.umk.pl/oai-pmh-repository.xml
oai:kpbc.umk.pl:65720
2018-01-18T11:01:54Z
KujawskoPomorskaDigitalLibrary:EducationalMaterials:mechanics KujawskoPomorskaDigitalLibrary:EducationalMaterials KujawskoPomorskaDigitalLibrary