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Growth of Nitrogen-fertilized and Thinned Quaking Aspen (Populus Tremuloides Michx.)

Donald A. Perala

出版	U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station, 1989
URL	http://books.google.com.hk/books?id=Arye2bpggjgC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN