2024-03-29T03:29:35Z
http://bc.umcs.pl/oai-pmh-repository.xml
oai:bc.umcs.pl:439
2012-12-13T10:10:26Z
dLibraDigitalLibrary:CulturalHeritage dLibraDigitalLibrary:CulturalHeritage:Journals dLibraDigitalLibrary dLibraDigitalLibrary:ScienceandEducation:ScientificPapers