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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Turner, James M. - Larson, Frederic R. (Frederic Roger), - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1974
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Heidmann, L. J. - Larson, Frederic R. (Frederic Roger), - Rietveld, W. J. - Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) - United States. Forest Service.
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1977
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Larson, Frederic R. (Frederic Roger), - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: [Portland, Or.], Pacific Northwest Research Station, [1990]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library