218089
xsd:long
2009-11-30T15:04:25+00:00
xsd:dateTime
2023-06-30T12:19:55+00:00
xsd:dateTime
approved
2009-11-30T15:04:25+00:00
xsd:dateTime
physics @en
natuurkunde @nl
natuurkunde @nl
physics @en
fysica @nl