Drug users and the future--certain or uncertain?
D000661:Amphetamine; D001463:Barbiturates; D002188:Cannabis; D006266:Health Education; D006801:Humans; D008238:Lysergic Acid Diethylamide; D019966:Substance-Related Disorders / Q000517:prevention & control
D001463:Barbiturates; D008238:Lysergic Acid Diethylamide; D000661:Amphetamine