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  1. By: Carmichael, R. S. (Robert S.) - United States. Forest Service.
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1978
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Knipe, O. D. - Pase, C. P. - Carmichael, R. S. (Robert S.)
    Publication info: Fort Collins, Colo, Rocky Mountain Forest and Range Experiment Station, 1979
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library