2024-03-28T10:25:49Z
http://bc.umcs.pl/oai-pmh-repository.xml
oai:bc.umcs.pl:534
2022-11-08T11:00:50Z
dLibraDigitalLibrary:ScienceandEducation dLibraDigitalLibrary dLibraDigitalLibrary:regional dLibraDigitalLibrary:Lublin700 dLibraDigitalLibrary:ScienceandEducation:ScientificPapers
]]>