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An Ecological Interpretation of Aerial Photographs in a Savanna Region in Northern Nigeria

Isaak Samuel ZonneveldP. N. de LeeuwWim G. Sombroek

出版	ITC, 1971
ISBN	90616400329789061640035
URL	http://books.google.com.hk/books?id=--6cLgAACAAJ&hl=&source=gbs_api