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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Cahill, Donn B. - United States. Forest Service.
    Publication info: Washington, D.C.?, U.S. Forest Service?, 1969?
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bark beetles  Bighorn National Forest  Bighorn National Forest (Wyo.)  Diseases and pests  Trees  Wyoming  
  2. By: United States. Forest Service. Rocky Mountain Region. - Good, L. S. - Washburn, F. E. - West, V. W. - Thornton, T. O.
    Publication info: [Washington, D.C.], The Service, 1940
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bighorn National Forest (Wyo.)  Forest reserves  Maps  Wyoming  
  3. By: United States. Forest Service.
    Publication info: [Washington, D.C.], U.S. Department of Agriculture, Forest Service, [1909]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bighorn National Forest  Bighorn National Forest (Wyo.)  Forest reserves  Forests and forestry  Maps  National parks and reserves  Wyoming