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Relative Efficiency of Four Methods of Harvesting and Preserving Forage Crops for Dairy Feed

Joseph Benjamin ShepherdLeonard G. SchoenleberW. H. HostermanH. M. TysdalR. E. WagnerW. J. SweetmanHerbert G. WisemanC. G. MelinLucy B. MooreMason August Hein

出版	United States Department of Agriculture, Agricultural Research Administration, Bureau of Dairy Industry, 1949
URL	http://books.google.com.hk/books?id=UajGoAEACAAJ&hl=&source=gbs_api