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

<http://data.bnf.fr/ark:/12148/cb11982104n> skos:closeMatch lcsh:sh85074773 .
lcsh:sh85133301
  skos:prefLabel "Telecommunication systems"@en ;
  a skos:Concept .

lcsh:sh85074773
  skos:member lcsh:collection_LCSHAuthorizedHeadings, lcsh:collection_LCSH_General ;
  skos:altLabel "Optical communication systems, Laser-based"@en, "Coherent light communication systems"@en, "Communication systems, Optical (Laser-based)"@en, "Light communication systems, Laser-based"@en ;
  skos:closeMatch <http://data.bnf.fr/ark:/12148/cb11982104n> ;
  dc:modified "1994-04-15T12:12:36"^^xsd:dateTime ;
  skos:inScheme <http://www.yso.fi/onto/lcsh> ;
  skos:broader lcsh:sh85067129, lcsh:sh85133301, lcsh:sh85095142 ;
  dc:created "1986-02-11T00:00:00"^^xsd:dateTime ;
  skos:prefLabel "Laser communication systems"@en ;
  skos:notation "TK5103.6" ;
  a skos:Concept .

lcsh:sh85008957 skos:broader lcsh:sh85074773 .
lcsh:sh85095164 skos:broader lcsh:sh85074773 .
lcsh:sh85095142
  skos:notation "TK5103.59" ;
  skos:prefLabel "Optical communications"@en ;
  a skos:Concept .

lcsh:sh85067129
  skos:notation "TA1660" ;
  skos:prefLabel "Integrated optics"@en ;
  a skos:Concept .

<http://www.yso.fi/onto/lcsh> a skos:ConceptScheme .