2023-06-30T12:35:26+00:00
xsd:dateTime
instrumenten om scherpe en doordringende geluidssignalen te geven @nl
2012-03-06T16:05:28+00:00
xsd:dateTime
231593
xsd:long
2012-03-06T16:05:28+00:00
xsd:dateTime
approved
sirenes @nl
sirens @en
sirens @en
sirenes @nl