2024-03-29T16:13:57Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:2091
2020-12-23T11:59:47Z
dLibraDigitalLibrary:contemporary_collection:periodicals dLibraDigitalLibrary dLibraDigitalLibrary:contemporary_collection dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical