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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hawksworth, Frank G. (Frank Goode), - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) - United States. Forest Service.
    Publication info: [Fort Collins, Colo.], Forest Service, U.S. Dept. of Agriculture, Rocky Mountain Forest and Range Experiment Station, 1963
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Black Hills (S.D. and Wyo.)  Diseases and pests  Pineland dwarf mistletoe  Ponderosa pine  
  2. By: Beatty, Jerome S - Mathiasen, Robert L. - United States. Forest Service.
    Edition: Rev. Sept. 2003.
    Publication info: [Washington, D.C.?], U.S. Dept. of Agriculture, Forest Service, 2003
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Internet resource  Pineland dwarf mistletoe  Ponderosa pine  Southwestern States