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Photo Guides for Appraising Downed Woody Fuels in Montana Forests

其他書名	How They Were Made
出版	U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1981
URL	http://books.google.com.hk/books?id=QlIUR76xdJAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN