2009-11-30T15:53:05+00:00
xsd:dateTime
2009-11-30T15:53:05+00:00
xsd:dateTime
2023-06-30T12:09:22+00:00
xsd:dateTime
220389
xsd:long
approved
lesmaterialen @nl
teaching materials @en
schoolboeken @nl
teaching materials @en
lesmaterialen @nl