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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Schenbeck, Greg L. - Myhre, Richard J. - United States. Forest Pest Management. Methods Application Group.
    Publication info: Fort Collins, Colo, U.S. Dept. of Agriculture, Forest Service, Forest Pest Management, Methods Application Group, [1986]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Riddell, J. A. - Schenbeck, Greg L. - O'Rourke, James T. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, The Station, [1997]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library