Effectiveness of drug education classes.
D000661:Amphetamine; D002188:Cannabis; D003042:Cocaine; D005860:Germany, West; D006266:Health Education / Q000592:standards*; D006801:Humans; D006993:Hypnotics and Sedatives; D008238:Lysergic Acid Diethylamide; D008297:Male; D008889:Military Personnel; D019966:Substance-Related Disorders / Q000534:rehabilitation; D011795:Surveys and Questionnaires; D014481:United States
D006993:Hypnotics and Sedatives; D008238:Lysergic Acid Diethylamide; D000661:Amphetamine; D003042:Cocaine