@prefix lcsh: <http://www.yso.fi/onto/lcsh/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

lcsh:sh85133527 skos:broader lcsh:sh85141744 .
lcsh:sh85047646 skos:broader lcsh:sh85141744 .
lcsh:sh85141746
  skos:notation "TK7871.72-TK7871.79", "TP159.V3", "TK6565.V3" ;
  skos:prefLabel "Vacuum-tubes"@en ;
  a skos:Concept .

lcsh:sh85141744
  dc:created "1986-02-11T00:00:00"^^xsd:dateTime ;
  skos:member lcsh:collection_LCSH_General, lcsh:collection_LCSHAuthorizedHeadings ;
  skos:broader lcsh:sh85041611, lcsh:sh85141746 ;
  skos:altLabel "Thermionic valve circuits"@en ;
  skos:inScheme <http://www.yso.fi/onto/lcsh> ;
  skos:prefLabel "Vacuum-tube circuits"@en ;
  a skos:Concept .

lcsh:sh85004771 skos:broader lcsh:sh85141744 .
lcsh:sh85110304 skos:broader lcsh:sh85141744 .
<http://www.yso.fi/onto/lcsh> a skos:ConceptScheme .
lcsh:sh85041611
  skos:notation "QC601", "TK3001-TK3226" ;
  skos:prefLabel "Electric circuits"@en ;
  a skos:Concept .