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  1. By: Fahey, Thomas D. (Thomas Daniel), - Plank, Marlin E. - Snellgrove, Thomas A. - Pacific Northwest Research Station (Portland, Or.)
    Publication info: [Portland, Or.], U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, 1986
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Plank, Marlin E. - Snellgrove, Thomas A. - 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
  3. By: Snellgrove, Thomas A. - Plank, Marlin E. - Lane, Paul H.
    Publication info: Portland, Or, Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1973
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Willits, Susan. - Woodfin, Richard O. - Snellgrove, Thomas A. - Pacific Northwest Research Station (Portland, Or.)
    Publication info: [Portland, Or.], U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1990
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library