Contributors: Reginald D. Forbes, Alvah Peterson, Arthur Truman Semple, Charles Dwight Marsh, Clarence Luther Forsling, Donald Bruce, Edmund Cecil Shorey, Franklin Post Metcalf, Hugh Curtis McPhee, Irvin Carl Feustel, Joshua John Skinner, Josiah Chase Folsom, Karl S. Quisenberry, Lyle Thomas Alexander, Marinus Westveld, R. W. Leukel, Richard Edwin McArdle, Stuart Bevier Show, Theo. H. Scheffer, Thomas Roy Truax, Walter Carter, Wilbur Clifford Edmundson, William Henry Black, A. B. Clawson, E. I. Kotok, Edwin Alfonso Trowbridge, H. E. Dvorachek, Horace Greeley Byers, K. D. Jacob, K. F. Warner, Lester Henry Reineke, O. N. Eaton, Charles Vinyard Wilson,
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Publisher: U.S. Department of Agriculture
Published: 1931
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