2024-03-29T03:24:11Z
https://kpbc.umk.pl/oai-pmh-repository.xml
oai:kpbc.umk.pl:55470
2018-01-18T11:06:12Z
KujawskoPomorskaDigitalLibrary:EducationalMaterials:mechanics KujawskoPomorskaDigitalLibrary:EducationalMaterials KujawskoPomorskaDigitalLibrary