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Photogeologic map of the Clay Hills-9 quadrangle, San Juan County, Utah
Clay Hills-9 quadrangle, San Juan County, Utah
1 map ; 58 x 47 cm., on sheet 71 x 61 cm. folded in envelope 30 x 24 cm.
by P.P. Orkild ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the U.S. Atomic Energy Commission.
"The aerial photographs used for photogeologic interpretation were taken in September, October, and November 1952."--from margin.
Miscellaneous geologic investigations ; map I-79