Grain grading primer - Combs, Willis B. (Willis Becker), 1894-; Smith, Fred G. (Fred George), 1885- (Washington, D.C. : U.S. Dept. of Agriculture, 1953)
Slight revision of Miscellaneous publication 325.
Includes bibliographical references (p. 59-60)
Mode of access: Internet.
Keywords: Grain -- Grading