title: Attitudes of middle-class heroin abusers towards representatives of the educational system.
mesh_terms: D000124:Achievement; D000288:Administrative Personnel; D000293:Adolescent; D000367:Age Factors; D001290:Attitude; D002653:Child Behavior Disorders / Q000150:complications; D003376:Counseling; D006556:Heroin Dependence / Q000453:epidemiology; D006801:Humans; D008297:Male; D012923:Social Class; D012926:Social Control, Formal; D013334:Students; D013663:Teaching; D014505:Urban Population