title: Fourth special session of the Commission on Narcotic Drugs.
mesh_terms: D002188:Cannabis; D003061:Codeine; D004335:Drug and Narcotic Control; D004467:Economics; D006801:Humans; D007391:International Cooperation; D007880:Legislation, Drug; D009294:Narcotics; D010506:Periodicals as Topic; D010944:Plants; D012106:Research; D019966:Substance-Related Disorders / Q000517:prevention & control
chemical_list: D009294:Narcotics; D003061:Codeine