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Grazing Intensities and Systems on Crested Wheatgrass in Central Utah
Neil C. FrischknechtUnited States. Agricultural Research ServiceLorin E. Harris
其他書名
Response of Vegetation and Cattle
出版United States Forest Service, 1968
URLhttp://books.google.com.hk/books?id=WXsWzQEACAAJ&hl=&source=gbs_api