2024-03-29T08:51:08Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:3451
2020-12-23T12:17:00Z
dLibraDigitalLibrary:regional_collection:bibliographies dLibraDigitalLibrary:contemporary_collection:bibliographies dLibraDigitalLibrary dLibraDigitalLibrary:contemporary_collection