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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Potts, Roy C. (Roy Chester), - Meyer, Herman F.,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1917
    Holding Institution: Multiple institutions
  2. By: Potts, Roy C. (Roy Chester),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1918
    Holding Institution: Multiple institutions