2024-03-28T21:01:51Z
http://bc.umcs.pl/oai-pmh-repository.xml
oai:bc.umcs.pl:39966
2021-07-02T11:48:35Z
dLibraDigitalLibrary:CulturalHeritage dLibraDigitalLibrary:ScienceandEducation dLibraDigitalLibrary:CulturalHeritage:Journals dLibraDigitalLibrary dLibraDigitalLibrary:ScienceandEducation:ScientificPapers