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  1. By: Briggs, George M. - MacMahon, James A.
    Type: Article
    In: The Great Basin naturalist
    Volume: 43
    Date: 1983
    Page Range: 523--530
    Publication Info: Provo, Utah, M.L. Bean Life Science Museum, Brigham Young University,
  2. By: Briggs, George M. - MacMahon, James A.
    Type: Article
    In: The Great Basin naturalist
    Volume: 42
    Date: 1982
    Page Range: 50--59
    Publication Info: Provo, Utah, M.L. Bean Life Science Museum, Brigham Young University,