2024-03-28T12:33:39Z
https://kpbc.umk.pl/oai-pmh-repository.xml
oai:kpbc.umk.pl:76796
2016-01-29T10:35:25Z
KujawskoPomorskaDigitalLibrary:EducationalMaterials KujawskoPomorskaDigitalLibrary:EducationalMaterials:Astronomy KujawskoPomorskaDigitalLibrary