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Geologic map of the Grayback quadrangle, Pinal County, Arizona
Grayback quadrangle, Pinal County, Arizona
1 map : color ; 58 x 49 cm., on sheet 84 x 81 cm., folded in envelope 30 x 24 cm. + text (2 pages ; 27 cm.)
by H.R. Cornwall and M.H. Krieger ; Department of the Interior, United States Geological Survey.
Relief map shown by contours and spot heights.
Includes 2 col. cross sections and location map.
Includes bibliographical references in text.