2024-03-29T00:48:16Z
http://bc.umcs.pl/oai-pmh-repository.xml
oai:bc.umcs.pl:201
2009-11-14T11:09:54Z
dLibraDigitalLibrary:ScienceandEducation dLibraDigitalLibrary dLibraDigitalLibrary:regional dLibraDigitalLibrary:ScienceandEducation:ScientificPapers