2024-03-28T23:00:24Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:15718
2022-12-22T10:18:24Z
dLibraDigitalLibrary dLibraDigitalLibrary:partners:is_opole dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical dLibraDigitalLibrary:partners