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  1. By: Schweitzer, Dennis L. - Benson, Robert E. (Robert Earl), - McConnen, Richard J., - Intermountain Forest and Range Experiment Station (Ogden, Utah)
    Publication info: Ogden, Utah, U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1975
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Yoho, James Gibson, - Chappelle, Daniel E. - Schweitzer, Dennis L.
    Publication info: Portland, Or, U.S. Pacific Northwest Forest and Range Experiment Station, 1969
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Schweitzer, Dennis L. - Benson, Robert E. (Robert Earl), - Ulrich, James R.
    Publication info: Ogden, Intermountain Forest and Range Experiment Station, 1976
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library