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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Roth, Adolph R. - United States. Forest Service. - United States. Bureau of Entomology and Plant Quarantine.
    Publication info: [Vancouver, Washington], [U.S. Department of Agriculture, Forest Service & Bureau of Entomology and Plant Quarantine], [1938]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Control  Gifford Pinchot National Forest  Mosquitoes  Mt. Adams Ranger District  Washington (State)  
  2. By: Roth, Andy. - Cecil, K. P. - Gifford Pinchot National Forest (Agency : U.S.)
    Publication info: Vancouver, Washington, [U.S. Department of Agriculture, Forest Service & Bureau of Entomology and Plant Quarantine], [1936]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Control  Gifford Pinchot National Forest  Mosquitoes  Mt. Adams Ranger District  Washington (State)  
  3. By: Cecil, K. P. - United States. Forest Service. - United States. Bureau of Entomology and Plant Quarantine.
    Publication info: [Vancouver, Washington], [U.S. Department of Agriculture, Forest Service & Bureau of Entomology and Plant Quarantine], [1937]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Control  Gifford Pinchot National Forest  Mosquitoes  Mt. Adams Ranger District  Washington (State)