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The Ability of Tree Age, Soil Type, Elevation, Soil Moisture and Spatial Distribution to Predict the Occurrence of Dutch Elm Disease in White Elms (ulmus Americana) in the Trent University Wildlife Sanctuary

Carol Bolton

出版	The Author, 2003
URL	http://books.google.com.hk/books?id=MZH2tgAACAAJ&hl=&source=gbs_api