2024-03-28T20:38:11Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:3452
2020-12-23T12:15:29Z
dLibraDigitalLibrary:regional_collection:bibliographies dLibraDigitalLibrary:contemporary_collection:bibliographies dLibraDigitalLibrary dLibraDigitalLibrary:contemporary_collection