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  1. By: Fight, Roger D. - Gedney, Donald R. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: Portland, Or. :Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture,1973.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Smith, Richard Chandler, - Gedney, Donald R. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: Portland, Or. :Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,1965.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library