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Peoples and economics in the Sudan, 1884 to 1956 : The First Part of a History of Human Tragedies on the Nil (1884 to 1984) / by G. Ayoub Balamoan ; edited by J.B. Wyon Balamoan,G. Ayoub, 1931-
Cambridge,Massachusetts: Harvard University Center for Population Studies, 1981-1976
517 page: Illustrations; 24 cm