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  1. By: Sweanor, Patricia. - Gudorf, Michelle A. - Singer, Francis J. - United States. National Park Service. Rocky Mountain Regional Office. - Midcontinent Ecological Science Center (U.S.) - United States. National Park Service. Natural Resource Preservation Program. - United States. Bureau of Land Management. - United States. Forest Service. - Utah. - South Dakota. - Colorado. - Foundation for North American Wild Sheep (U.S.)
    Publication info: Fort Collins, Colo, National Biological Service, Midcontinent Ecological Science Center, [1996]
    Holding Institution: Bureau of Land Management
  2. By: Singer, Francis J. - Coates-Markle, L. (Linda) - Hobbs, N. Thompson. - Lubow, Bruce. - McCue, Patrick M. - Kirkpatrick, Jay F. - Cothran, E. Gus, - United States. Bureau of Land Management. - National Wild Horse and Burro Program (U.S.) - Geological Survey (U.S.). Biological Resources Division. - Colorado State University. Natural Resource Ecology Laboratory.
    Publication info: [Place of publication not identified], [U.S. Department of the Interior, Bureau of Land Management], 2005, 2002
    Holding Institution: Bureau of Land Management
  1. By: Singer, Francis J. - Renkin, Roy A
    Type: Article
    In: The Great Basin naturalist
    Volume: 55
    Issue: 3
    Date: 1995
    Page Range: 201--212
    Publication Info: Provo, Utah, M.L. Bean Life Science Museum, Brigham Young University,
  2. By: Singer, Francis J. - Doherty, Jonathan L.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 99
    Issue: 2
    Date: 1985
    Page Range: 205--217
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Singer, Francis J.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 92
    Issue: 3
    Date: 1978
    Page Range: 283--286
    Publication Info: Ottawa Ottawa Field-Naturalists' Club