2024-03-29T02:56:31Z
https://www.wbc.poznan.pl/oai-pmh-repository.xml
oai:www.wbc.poznan.pl:492413
2020-10-20T12:12:21Z
rootCollection rootCollection:wbc rootCollection:wbc:DigitalLibraryOfWielkopolska rootCollection:wbc:DigitalLibraryOfWielkopolska:EducationalMaterials