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Government Document Map -
6Published 1990Subjects: “...Coal leases Montana Bull Mountains....”
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13Published 1957“...Centennial Mountain quadrangle, Bearpaw Mountains, Montana...”
Government Document Map -
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15Published 1990Subjects: “...Coal Montana Bull Mountain Region Maps....”
Government Document Map -
16Published 1993Government Document Map
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17by Du Bray, E. A.Subjects: “...Petrology Montana Crazy Mountains....”
Published 2006
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Government Document Book -
18Published 1988Subjects: “...Mines and mineral resources Montana Pioneer Mountains....”
Government Document Book -
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20by Sahinen, Uuno M. (Uuno Mathias), 1906-Subjects: “...Geology Montana Highland Mountains....”
Published 1950
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