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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Silcox, F. A. (Ferdinand Augustus),
    Publication info: [Washington, D.C.], [United States Department of Agriculture], [1933]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Silcox, F. A. (Ferdinand Augustus),
    Publication info: [Washington, D.C.], [United States Department of Agriculture], [1936]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Silcox, F. A. (Ferdinand Augustus),
    Publication info: [Washington, D.C.], [United States Department of Agriculture], [1934]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Silcox, F. A. (Ferdinand Augustus), - United States. Forest Service.
    Publication info: [N.p.], 1935
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library