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Response of Seeded Ranges to Different Grazing Intensities in the Ponderosa Pine Zone of Colorado

Pat O. CurrieDwight R. Smith

出版	U.S. Forest Service, 1970
URL	http://books.google.com.hk/books?id=S9xGAQAAMAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN