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Silviculture of Ponderosa Pine in the Central and Southern Rocky Mountains

Wayne D. Shepperd

出版	USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 1983
URL	http://books.google.com.hk/books?id=QHK9kSgY6qEC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN