title: The prevalence of the morphin and cocain habits.
mesh_terms: D019970:Cocaine-Related Disorders / Q000453:epidemiology / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D007880:Legislation, Drug / Q000266:history*; D009021:Morphine Dependence / Q000453:epidemiology / Q000266:history*; D015995:Prevalence; D013219:State Government; D014481:United States / Q000453:epidemiology