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  1. By: DeVelice, Robert L. - Montana Natural Heritage Program. - United States. Bureau of Land Management. Billings District Office. - United States. Bureau of Land Management. Billings District Office.
    Publication info: Helena, Mt, Montana Natural Heritage Program, [1992]
    Holding Institution: Montana State Library
  2. By: Lesica, Peter - Montana Natural Heritage Program. - United States. Bureau of Land Management. Billings District Office. - United States. Bureau of Land Management. Billings District Office.
    Publication info: Helena, Montana Natural Heritage Program, [1998]
    Holding Institution: Montana State Library