2024-03-28T19:39:46Z
https://www.wbc.poznan.pl/oai-pmh-repository.xml
oai:www.wbc.poznan.pl:270946
2013-09-16T14:18:41Z
rootCollection rootCollection:wbc rootCollection:wbc:DigitalLibraryOfWielkopolska rootCollection:wbc:DigitalLibraryOfWielkopolska:EducationalMaterials