@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .

<https://lod.nal.usda.gov/naltv#marc001> rdfs:label "Field 001 in MARC Authority Format"@en .
<https://lod.nal.usda.gov/nalt>
  a skos:ConceptScheme ;
  rdfs:label "NALT Full"@en .

<https://lod.nal.usda.gov/naltv#Topic>
  a owl:Class ;
  rdfs:label "Topic"@en .

nalt:31841
  a skos:Concept, <https://lod.nal.usda.gov/naltv#Topic> ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2017-08-11"^^xsd:date ;
  skos:altLabel "daylength"@en, "light-dark cycle"@en, "daylight cycle"@en, "light cycle"@en, "day length"@en, "dark-light cycle"@en, "light regime"@en ;
  skos:broader nalt:4631 ;
  skos:exactMatch <http://id.cabi.org/cabt/89408>, <http://id.agrisemantics.org/gacs/C2121> ;
  skos:inScheme <https://lod.nal.usda.gov/nalt>, <https://lod.nal.usda.gov/nalt-core> ;
  skos:narrower nalt:31740, nalt:50035 ;
  skos:prefLabel "photoperiod"@en, "fotoperíodo"@es ;
  skos:related nalt:57467, nalt:47447, nalt:306800 ;
  ns0:marc001 "28345" .

nalt:50035
  a ns0:Topic, skos:Concept ;
  skos:broader nalt:31841 ;
  skos:prefLabel "fotofase"@es, "photophase"@en .

nalt:31740
  a ns0:Topic, skos:Concept ;
  skos:broader nalt:31841 ;
  skos:prefLabel "escotofase"@es, "scotophase"@en .

nalt:57467
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "fotoperiodismo"@es, "photoperiodism"@en ;
  skos:related nalt:31841 .

nalt:47447
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "radiación solar"@es, "solar radiation"@en ;
  skos:related nalt:31841 .

nalt:306800
  a ns0:Topic, skos:Concept ;
  skos:prefLabel "light transmission"@en, "transmisión de luz"@es ;
  skos:related nalt:31841 .

nalt:4631
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:31841 ;
  skos:prefLabel "factores ambientales"@es, "environmental factors"@en .