2024-03-28T10:25:43Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:2013
2020-12-23T11:44:40Z
dLibraDigitalLibrary:contemporary_collection:periodicals dLibraDigitalLibrary dLibraDigitalLibrary:contemporary_collection dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical