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Natural Resources and Development Potential in the Southern Provinces of the Sudan. A Preliminary Report by the Southern Development Investigation Team. [With Maps and Diagrams.].

SUDAN Anglo-Egyptian Sudan. Ministry of Finance. Southern Development Investigation Team

出版	Sudam Government, 1955
URL	http://books.google.com.hk/books?id=S7jSzAEACAAJ&hl=&source=gbs_api