Patterns of drug usage among university students. IV. Use of marihuana, amphetamines, opium, and LSD by undergraduates.
D000661:Amphetamine; D002188:Cannabis; D003710:Demography; D005260:Female; D006801:Humans; D008238:Lysergic Acid Diethylamide; D008297:Male; D009892:Opium; D012959:Socioeconomic Factors; D013334:Students; D019966:Substance-Related Disorders / Q000453:epidemiology*; D014481:United States; D014495:Universities
D009892:Opium; D008238:Lysergic Acid Diethylamide; D000661:Amphetamine