@prefix actris_vocab: <https://vocabulary.actris.nilu.no/actris_vocab/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .

actris_vocab:secondarystandard
  skos:definition "Measurement reference certified against a secondary standard."@en ;
  skos:broader actris_vocab:qualitycontrolreferencetype ;
  skos:inScheme actris_vocab: ;
  skos:prefLabel "secondary standard"@en ;
  dc:creator <https://orcid.org/0000-0002-3380-3470> ;
  a skos:Concept .

actris_vocab:qualitycontrolreferencetype
  skos:prefLabel "quality control reference type"@en ;
  a skos:Concept ;
  skos:narrower actris_vocab:secondarystandard .

actris_vocab:
  skos:prefLabel "ACTRIS Vocabulary"@en ;
  a skos:ConceptScheme .