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  1. By: Farr, Wilbur A. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: Juneau, Alaska, Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1967
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Farr, Wilbur A. - Harris, A. S. - 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, 1971
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Farr, Wilbur A. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: [Portland, Or.], U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1984
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Farr, Wilbur A. - LaBau, Vernon J. - 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, [1971]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library