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Trees and Logs Important to Wildlife in the Interior Columbia River Basin

Evelyn L. BullCatherine G. ParksTorolf R. Torgersen

出版	U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1997
URL	http://books.google.com.hk/books?id=6FgW1vDTMYcC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN