2024-03-29T16:53:38Z
http://bc.umcs.pl/oai-pmh-repository.xml
oai:bc.umcs.pl:25799
2021-09-03T13:54:10Z
dLibraDigitalLibrary:CulturalHeritage dLibraDigitalLibrary:ScienceandEducation dLibraDigitalLibrary:CulturalHeritage:Journals dLibraDigitalLibrary dLibraDigitalLibrary:regional dLibraDigitalLibrary:Lublin700 dLibraDigitalLibrary:ScienceandEducation:ScientificPapers