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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hildebrand, D.M. - Dinkel, G.B.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Johnson, David W. (David Winslow), - Hawksworth, Frank G. (Frank Goode), - Hildebrand, D.M.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Johnson, David W. (David Winslow), - Hildebrand, D.M.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library