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  1. By: Mathews, Sarah Y. - Montana Natural Heritage Program.
    Publication info: Bozeman?, Mont, Dept. of Biology, Montana State University?, 1990
    Holding Institution: Montana State Library
  2. By: Mathews, Sarah Y. - Montana Natural Heritage Program. - United States. Forest Service.
    Publication info: Helena, Mont, Montana Natural Heritage Program, [1989]
    Holding Institution: Montana State Library
  1. By: Mathews, Sarah Y. - Lavin, Matt - Sharrock, Robert A
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 82
    Date: 1995
    Page Range: 296--321
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-