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Geologic map of the Houston Gulch quadrangle, Gunnison and Saguache counties, Colorado
Houston Gulch quadrangle, Gunnison and Saguache counties, Colorado
1 map : color ; 58 x 45 cm., on sheet 84 x 81 cm., folded in envelope 30 x 24 cm.
by Jerry C. Olson ; Department of the Interior, United States Geological Survey.
Relief shown by contours and spot heights.
Includes 2 col. cross-sections, and location map.