Oats. Handbook of official grain standards for oats, feed oats, mixed feed oats, and grain sorghums, tabulated and abridged description of official grain standards of United States as established and promulgated by Secretary of Agriculture, for oats, as revised, effective Sept. 1, 1925, for feed oats, effective Sept. 1, 1925, for mixed feed oats, effective Sept. 1, 1925, for grain sorghums, effective Dec. 1, 1924.