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r-32 r-125 r-134a
Hoffman, Bridge Engineer, Arizona Highway Department, photographer, April 1928 (original print located at Arizona Department of Transportation, Phoenix AZ).
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geochronology of the brealito basin - geo.arizona
Affiliations: Department of Geosciences, University of Arizona, Tucson, Arizona, USA. Abstract. Isotopic analyses of zircons from the Brealito basin
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