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Harvesting Costs for Mechanized Thinning Systems in Slash Pine Plantations

James E. Granskog

出版	U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station, 1978
URL	http://books.google.com.hk/books?id=kfmK1znJySYC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN