Drug abuse and law enforcement.
D001290:Attitude; D002188:Cannabis; D004335:Drug and Narcotic Control; D006266:Health Education; D003932:Heroin; D006801:Humans; D007603:Jurisprudence; D007880:Legislation, Drug; D009021:Morphine Dependence; D012380:Role; D012926:Social Control, Formal; D013334:Students; D019966:Substance-Related Disorders; D014481:United States
D003932:Heroin