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Reconnaissance geologic map of the Gu Achi quadrangle, Pima County, Arizona
1 map ; 45 x 38 cm., on sheet 89 x 106 cm., folded in envelope 25 x 31 cm.
Joseph A. Briskey [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Papago Indian Tribe and the Bureau of Indian Affairs.
Relief shown by contours and spot heights.
Includes location map, tables, and text.
Covers area of "Drew Spring Well," "Santa Rosa," "Ventana," and "Window Mountain" 7.5ʹ quadrangles.
Miscellaneous field studies ; map MF-965