2009-11-30T15:21:18+00:00
xsd:dateTime
approved
2013-01-23T14:07:26+00:00
xsd:dateTime
2009-11-30T15:21:18+00:00
xsd:dateTime
218899
xsd:long
2023-04-24T13:36:26+00:00
xsd:dateTime
marconisten
radiotelegrafie
marconisten