1997 National Survey on Drug Abuse finds increase in illicit drug use, primarily marijuana, among U.S. youth.
D000293:Adolescent; D002648:Child; D006801:Humans; D002189:Marijuana Abuse / Q000453:epidemiology; D019966:Substance-Related Disorders / Q000453:epidemiology*; D014481:United States / Q000453:epidemiology