2024-03-28T09:28:53Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:12559
2021-04-22T13:37:50Z
dLibraDigitalLibrary:contemporary_collection:periodicals dLibraDigitalLibrary dLibraDigitalLibrary:contemporary_collection dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical