2024-03-29T02:53:29Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:15563
2020-12-02T15:41:50Z
dLibraDigitalLibrary dLibraDigitalLibrary:partners:is_opole dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical dLibraDigitalLibrary:partners