"Tropical Medicine history." . . "Since 1821" . . "Geschichte Entwicklung Sudan." . . "Geschichte 1820-1985" . . "Geschichte 1820-1985." . "Aufsatzsammlung." . . "Social Change." . . . . . . . . . . . "Bibliographie" . . . . . "Modernization in the Sudan"@en . "Modernization in the Sudan essays in honor of Richard Hill"@en . . "Aufsatzsammlung" . . . . . "Modernization in the Sudan : essays in honour of Richard Hill" . . "History"@en . "History" . . . . . . . "Modernization in the Sudan : essays in honor of Richard Hill" . . . "Festschriften" . "City Planning history." . . "Soudan" . . "Sudan" . . "Sudan." . "Religion." . . "Bibliographie." . . "Geschichte" . . "Industry history." . . . .