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Twenty-year Performances of Scotch, European Black (Austrian), Red, and Jack Pines in Eastern Nebraska

David F. Van Haverbeke

出版	U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1986
URL	http://books.google.com.hk/books?id=RwF0XxvNOtoC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN