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Geology of the Brisbin quadrangle, Montana
Brisbin quadrangle, Montana, geologic map
1 map : color ; 58 x 41 cm., on sheet 74 x 76 cm., folded in envelope 30 x 24 cm.
by Albert E. Roberts ; Department of the Interior, United States Geological Survey.
Relief shown by contours and spot heights.
"Geology mapped in part by Paul W. Richards, 1949, and Albert E. Roberts, 1957."