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Proceedings--Range Economics Symposium and Workshop, August 31-September 2, 1982, Salt Lake City, Utah

出版	U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1983
URL	http://books.google.com.hk/books?id=t7yY6eGRLEcC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN