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Theory and Techniques for Assessing the Demand and Supply of Outdoor Recreation in the United States

H. Ken Cordell

出版	U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1989
URL	http://books.google.com.hk/books?id=RosarzSd8ZcC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN