登入選單

返回Google圖書搜尋

Use of Ratio Techniques in Estimating the Dry Matter Consumed in Pasture Herbage by Grazing Animals

E. A. KaneW. C. JacobsonR. E. Ely

出版	United States Department of Agriculture, Agricultural Research Service, Bureau of Dairy Industry, 1953
URL	http://books.google.com.hk/books?id=49GnoAEACAAJ&hl=&source=gbs_api