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USDA Forest Service Research Note SE.

Southeastern Forest Experiment Station (Asheville, N.C.)

出版	Southeastern Forest Experiment Station, U.S. Department of Agriculture, Forest Service., 1977
URL	http://books.google.com.hk/books?id=bdzv6yhhEQcC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN