2024-03-29T07:33:53Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:5213
2019-09-03T12:46:08Z
dLibraDigitalLibrary:cultural_heritage dLibraDigitalLibrary dLibraDigitalLibrary:regional_collection:books dLibraDigitalLibrary:regional_collection