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An Eco-climatic Classification of Intertropical Africa

Henri Noël Le HouérouG. F. PopovFood and Agriculture Organization of the United Nations

出版	Food and Agriculture Organization of the United Nations, 1981
ISBN	92510113899789251011386
URL	http://books.google.com.hk/books?id=0sARAQAAIAAJ&hl=&source=gbs_api