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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Marsden, Michael A. - Ciesla, William M. - Twardus, Daniel B. - 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, [1984]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Marsden, Michael A. - Eav, Bov Bang, - Thompson, Matthew K. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) - United States. Forest Service.
    Publication info: [Fort Collins, Colo.], USDA Forest Service, Rocky Mountain Forest and Range Experiment Station, 1993
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library