2007-11-23T13:29:05+00:00
xsd:dateTime
2007-11-23T13:29:05+00:00
xsd:dateTime
28646
xsd:long
approved
2010-08-10T13:43:24+00:00
xsd:dateTime
exacte wetenschappen
2023-04-24T13:34:32+00:00
xsd:dateTime
exacte wetenschappen
natuurwetenschappen