title: The problem of oesophageal cancer relative to other cancers in southern Africa--1949-1979.
mesh_terms: D001741:Black or African American; D044383:Black People; D004938:Esophageal Neoplasms / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D007194:India / Q000208:ethnology; D008297:Male; D013019:South Africa; D044465:White People