From hard to soft drugs: temporal and substantive changes in drug usage among gangs in a working-class community.
D000293:Adolescent; D000328:Adult; D001290:Attitude; D003467:Cultural Deprivation; D006801:Humans; D008297:Male; D008913:Minority Groups; D009518:New York; D012923:Social Class; D012926:Social Control, Formal; D012959:Socioeconomic Factors; D019966:Substance-Related Disorders