2024-03-28T17:23:35Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:15757
2022-12-22T10:19:18Z
dLibraDigitalLibrary dLibraDigitalLibrary:partners:is_opole dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical dLibraDigitalLibrary:partners