Grain grading primer /
[by William P. Carroll, Willis B. Combs, and Fred G. Smith].

APA Citation

Carroll, W. P. (William Peter)., Smith, F. G. (Fred George)., Combs, W. B. (Willis Becker). (1938). Grain grading primer. Washington, D.C.: U.S. Dept. of Agriculture, Bureau of Agricultural Economics.

MLA Citation

Carroll, W. P. (William Peter), 1874-1937, Fred G. (Fred George) Smith, and Willis B. (Willis Becker) Combs. Grain Grading Primer. Washington, D.C.: U.S. Dept. of Agriculture, Bureau of Agricultural Economics, 1938.