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  1. A preliminary survey of the bats of the Deerlodge National Forest Montana : 1991 / by Thomas W. Butts for the U.S.D.A. Forest Service, Deerlodge National Forest.
    By: Butts, Thomas W. - Beaverhead-Deerlodge National Forest (Agency : U.S.) - Montana Natural Heritage Program.
    Publication info: Helena, Mont. :Montana Natural Heritage Program,[c1993]
    Contributed by: Montana State Library (archive.org)
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  2. A survey of the bats of the Deerlodge National Forest Montana : 1992 / by Thomas W. Butts for the Deerlodge National Forest, U.S. Forest Service.
    By: Butts, Thomas W. - Beaverhead-Deerlodge National Forest (Agency : U.S.) - Montana Natural Heritage Program.
    Publication info: Helena, Mont. :Montana Natural Heritage Program,[c1993]
    Contributed by: Montana State Library (archive.org)
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  3. A survey of the bats of the Townsend Ranger District Helena National Forest, Montana / by Thomas W. Butts for the Helena National Forest, U.S. Forest Service.
    By: Butts, Thomas W. - Helena National Forest (Agency : U.S.) - Montana Natural Heritage Program.
    Publication info: Helena, Mont. :Montana Natural Heritage Program,[c1993]
    Contributed by: Montana State Library (archive.org)
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  4. Wolverine (Gulo gulo) biology and management : a literature review and annotated bibliography /
    By: Butts, Thomas W. - United States.
    Publication info: [Missoula?, Mont.] :The Program,[1992]
    Contributed by: Montana State Library (archive.org)
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