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Geologic map of the Bannack-Grayling area, Beaverhead County, Montana
Bannack-Grayling area, Beaverhead County, Montana
1 map : color ; 98 x 66 cm., on sheet 110 x 96 cm., folded to 26 x 20 cm., in envelope 30 x 24 cm. + text (6 pages ; 28 cm.)
Prepared as part of the Interior Department program for development of the Missouri River Basin."."
"Base from U.S. Forest Service maps and serial photographs ... geology mapped in 1946-50."
Includes explanations, geologic cross sections, and quadrangle location map.
Text includes bibliographical references.
Miscellaneous geologic investigations ; map I-433