2024-03-28T14:40:33Z
https://obc.opole.pl/oai-pmh-repository.xml
oai:obc.opole.pl:5239
2019-08-30T11:53:59Z
dLibraDigitalLibrary:cultural_heritage dLibraDigitalLibrary dLibraDigitalLibrary:regional_collection:books dLibraDigitalLibrary:regional_collection