@prefix n9j: <http://data.loterre.fr/ark:/67375/N9J> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

n9j:-L0RP6545-Z
  skos:prefLabel "paging systems"@en ;
  a skos:Concept ;
  skos:broader n9j:-D3G57R28-1 .

n9j:-PXFR0S4J-X
  skos:prefLabel "pneumatic tube systems"@en ;
  a skos:Concept ;
  skos:broader n9j:-D3G57R28-1 .

n9j:-RK0Z8BRV-D
  skos:prefLabel "public address systems"@en ;
  a skos:Concept ;
  skos:broader n9j:-D3G57R28-1 .

n9j: a skos:ConceptScheme .
n9j:-MGH1Q0K6-F
  skos:prefLabel "staff location and call systems"@en ;
  a skos:Concept ;
  skos:broader n9j:-D3G57R28-1 .

n9j:-RCC0MX3W-8
  skos:prefLabel "intercom"@en ;
  a skos:Concept ;
  skos:broader n9j:-D3G57R28-1 .

n9j:-concepts
  a isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member n9j:-D3G57R28-1 .

n9j:-L55CBGKZ-2
  skos:prefLabel "building communication services"@en ;
  a skos:Concept ;
  skos:narrower n9j:-D3G57R28-1 .

n9j:-D3G57R28-1
  skos:inScheme n9j: ;
  skos:narrower n9j:-MGH1Q0K6-F, n9j:-PXFR0S4J-X, n9j:-RK0Z8BRV-D, n9j:-L0RP6545-Z, n9j:-RCC0MX3W-8 ;
  a skos:Concept ;
  owl:sameAs <https://concepts.sagepub.com/social-science/concept/building_audio_communications_systems> ;
  skos:prefLabel "building audio communications systems"@en ;
  skos:broader n9j:-L55CBGKZ-2 .