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Permanent Logging Roads for Better Woodlot Management

Richard F. HaussmanEmerson W. Pruett

出版	Department of Agriculture, Forest Service, Northeastern Area, State and Private Forestry, 1978
URL	http://books.google.com.hk/books?id=qf0GrXIzEqYC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN