@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:47471
  a <https://lod.nal.usda.gov/naltv#Topic>, skos:Concept ;
  dc:created "2006-01-19"^^xsd:date ;
  dc:modified "2018-09-05"^^xsd:date ;
  skos:altLabel "mussel shells"@en, "clam shells"@en, "snail shells"@en ;
  skos:broader nalt:38928 ;
  skos:inScheme <https://lod.nal.usda.gov/nalt> ;
  skos:narrower nalt:197750 ;
  skos:prefLabel "shell (molluscs)"@en, "concha (moluscos)"@es ;
  skos:related nalt:285583 ;
  ns0:marc001 "33775" .

nalt:197750
  a ns0:Topic, skos:Concept ;
  skos:broader nalt:47471 ;
  skos:prefLabel "conchas de ostra"@es, "oyster shells"@en .

nalt:38928
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:47471 ;
  skos:prefLabel "exoesqueleto"@es, "exoskeleton"@en .

nalt:285583
  a ns0:Chemical, skos:Concept ;
  skos:prefLabel "nácar"@es, "nacre"@en ;
  skos:related nalt:47471 .