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

n9j: a skos:ConceptScheme .
n9j:-G8K6H7D9-L
  skos:prefLabel "types of drugs"@en ;
  a skos:Concept ;
  skos:narrower n9j:-D47G7LTJ-3 .

n9j:-PBZ2NL5L-F
  skos:prefLabel "controlled drugs"@en ;
  a skos:Concept ;
  skos:narrower n9j:-D47G7LTJ-3 .

n9j:-MB48CG9B-5
  skos:prefLabel "drug classification"@en ;
  a skos:Concept ;
  skos:narrower n9j:-D47G7LTJ-3 .

n9j:-FBXQGCVM-H
  skos:prefLabel "drugs"@en ;
  a skos:Concept ;
  skos:narrower n9j:-D47G7LTJ-3 .

n9j:-D47G7LTJ-3
  owl:sameAs <https://concepts.sagepub.com/social-science/concept/methamphetamine> ;
  skos:definition "Methamphetamine is a powerful member of the amphetamine class of stimulant drugs. Amphetamines, including methamphetamine, were widely produced as prescription and over-the-counter drugs for a wide range of ailments and conditions by the mid-20th century. [Source: Encyclopedia of Drug Policy; Methamphetamine]"@en ;
  a skos:Concept ;
  skos:inScheme n9j: ;
  skos:broader n9j:-PBZ2NL5L-F, n9j:-MB48CG9B-5, n9j:-G8K6H7D9-L, n9j:-FBXQGCVM-H ;
  skos:prefLabel "methamphetamine"@en .

n9j:-concepts
  a isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member n9j:-D47G7LTJ-3 .