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ContributorsMatthes, F. (Author) / Evans, R. T. (Author) / The Military engineer (Publisher)
Created1926-05
DescriptionGeological Survey of the Grand Canyon in published journal. Vol. XVIII, No. 99.
Created1964 to 1971
Created1964 to 1971
Created1964 to 1971
Created1964 to 1971
Created1971