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  1. By: Barbour, R. James. - Pacific Northwest Research Station (Portland, Or.)
    Publication info: Portland, OR, U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [2003]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Fight, Roger D. - Barbour, R. James. - Pacific Northwest Research Station (Portland, Or.)
    Publication info: Portland, OR, U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [2006]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Stevens, James A. - Barbour, R. James. - Pacific Northwest Research Station (Portland, Or.)
    Publication info: [Portland, Or.], U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [2000]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. By: Nagubadi, Rao V. - Fight, Roger D. - Barbour, R. James. - Pacific Northwest Research Station (Portland, Or.)
    Publication info: Portland, OR, U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [2003]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Kiviat, Erik - Barbour, R. James.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 110
    Issue: 2
    Date: 1996
    Page Range: 341--343
    Publication Info: Ottawa Ottawa Field-Naturalists' Club