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Work cat.: (OSt)8263: WHO Expert Committee on Implementation of the Convention on Psychotropic Substances, 1971 (1980 : Geneva). 657427, Assessment of public health and social problems associated with the use of psychotropic drugs : report of the WHO Expert Committee on Implementation of the Convention on Psychotropic Substances, 1971 [meeting held in Geneva from 15 to 20 September 1980].