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  1. By: Maki, Wilbur R. - Schallau, Con H. - Beuter, John H. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, [1968]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Beuter, John H.
    Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, 1971
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Beuter, John H.
    Publication info: Portland, Or, U.S. Pacific Northwest Forest and Range Experiment Station, 1969
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library