2024-03-29T16:21:49Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:15724
2022-12-22T10:18:24Z
dLibraDigitalLibrary dLibraDigitalLibrary:partners:is_opole dLibraDigitalLibrary:regional_collection dLibraDigitalLibrary:regional_collection:periodical dLibraDigitalLibrary:partners