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An analysis of the wildlife and fish situation in the United States : 1989 - 2040 ; [a technical document supporting the 1989 USDA Forest Service RPA Assessment]

Curtis H. Flather

出版	Rocky Mountain Forest and Range Experiment Station, 1989
URL	http://books.google.com.hk/books?id=IQTMzgEACAAJ&hl=&source=gbs_api