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  1. A population study of the Rocky Mountain bighorn sheep (Ovis canadensis canadensis Shaw) on Wildhorse Island /
    By: Ogren, Herman A. - Montana Fish and Game Commission. - Pittman-Robertson Project (Mont.)
    Publication info: [S.l.] :Montana Fish and Game Commission, Wildlife Restoration Division,[1954]
    Contributed by: Montana State Library (archive.org)
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  2. Quarterly report /
    By: Montana Fish and Game Commission. - Pittman-Robertson Project (Mont.)
    Publication info: Montana? :The Division
    Contributed by: Montana State Library (archive.org)
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