2024-03-29T15:33:48Z
http://bc.umcs.pl/oai-pmh-repository.xml
oai:bc.umcs.pl:1526
2010-02-02T14:03:05Z
dLibraDigitalLibrary:ScienceandEducation dLibraDigitalLibrary dLibraDigitalLibrary:regional dLibraDigitalLibrary:ScienceandEducation:ScientificPapers