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Desertification in the Sahelian and Sudanian Zones of West Africa

Jean Eugène GorseDavid R. Steeds

出版	World Bank, 1987
主題	Nature / GeneralScience / Life Sciences / EcologyScience / Earth Sciences / Meteorology & ClimatologyTechnology & Engineering / Agriculture / General
ISBN	08213089719780821308974
URL	http://books.google.com.hk/books?id=wAUSAQAAIAAJ&hl=&source=gbs_api