Reconnaissance geologic map of the northern half of the Helmville Quadrangle, Powell County, Montana

Open-File Report 79-444
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Publication type Report
Publication Subtype USGS Numbered Series
Title Reconnaissance geologic map of the northern half of the Helmville Quadrangle, Powell County, Montana
Series title Open-File Report
Series number 79-444
DOI 10.3133/ofr79444
Edition -
Year Published 1979
Language ENGLISH
Description 1 map ;58 x 40 cm. + legend on sheet 71 x 85 cm. --