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Wheat, Yields Per Acre and Prices, by States, 50 Years, 1866-1915

Archibald Robinson WardCharles Ernest RamserCharles Ford LangworthyClarence John HumphreyDalton Giles MillerEmil George BoernerErnest Ralph SasscerH. R. CatesHarry Donald TiemannHarry Percy BarrowsHoward Ross TolleyHugo John WichmannLevi Morton ThomasMorton Oscar CooperRobert Conrad PalmerRoy Lee NewtonSamuel Mable ThomsonUnited States. Bureau of Crop EstimatesWilliam Dent SterrettArthur Dickie BordenArthur Dunham HolmesBernard Alfred GallagherCornelius Morris BennettGeorge Harvey MillerJohn Regester HumphreyLouie Theodore JessupLillian M. Church

出版	U.S. Department of Agriculture, 1916
URL	http://books.google.com.hk/books?id=OF3BzgEACAAJ&hl=&source=gbs_api

註釋

Of the characteristics of the five classes of Montana wheat. pp. 33.