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  1. By: Porter, B. A. (Bennet Allen), - Porter, B. A. (Bennet Allen), - Middleton, William, - Larrimer, W. H. (Walter Harrison), - United States. Department of Agriculture.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, October 15, 1934
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library