Handbook of Official Grain Standards for Wheat, Shelled Corn, Oats, Feed Oats, Mixed Feed Oats, Rye, Grain, Sorghums and Barley: Standards in Effect on September 15, 1927. Tabulated and Abridged Descriptions of the Official Grain Standards of the United States as Established and Promulgated by the Secretary of Agriculture ...
United States. Bureau of Agricultural Economics
Jan 1928 · U.S. Government Printing Office