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Geologic map and cross section of the Wallrock quadrangle, Gallatin and Park Counties, Montana
Wallrock quadrangle, Gallatin and Park Counties, Montana
1 map : color ; 58 x 41 cm., on sheet 79 x 76 cm., folded in envelope 30 x 24 cm.
by Betty Skipp ; Department of the Interior, United States Geological Survey.
Relief shown by contours and spot heights.
"Geology by Betty Skipp, 1965-66, 1972, assisted by M. M. Coates, 1965, and S. H. Feichtinger, 1966 ...."
Includes text, col. cross-section, index to adjacent maps, and location map.