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1979 Report
David A. Marquis
H. Clay Smith
Howard G. Halverson
J. D. Helvey
Joseph C. Mawson
Ronnie Brenneman
Northeastern Forest Experiment Station (Radnor, Pa.)
其他書名
Northeastern Forest Experiment Station, Forest Service, USDA.
出版
U.S. Department of Agriculture, Forest Service
, 1980
URL
http://books.google.com.hk/books?id=wKCHmgEACAAJ&hl=&source=gbs_api