2024-03-28T18:26:15Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:2083
2020-12-23T11:58:37Z
dLibraDigitalLibrary:contemporary_collection:periodicals dLibraDigitalLibrary dLibraDigitalLibrary:contemporary_collection dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical