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1984. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Branch of Distribution, USGS. English. Public. Colorado. and Colorado.
1913. 2018-05-15T20:23:51Z. 2018-05-15T20:23:51Z. George, Russell D., 1866-. Colorado State Geological Survey. English. cartographic image. Public. Colorado, U.S., and Colorado.
1959. 2018-05-16T17:44:32Z. 2018-05-16T17:44:32Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Colorado, Colorado., and Oklahoma.
1979. 2018-05-16T18:00:29Z. 2022-12-08T04:43:49Z. Tweto, Ogden, 1912-1983, compiler. Department of the Interior, United States Geological Survey,for sale by Branch of Distribution, U.S. Geological Survey. English. cartographic image. Public. Colorado, États-Unis, and Colorado.
1935. 2018-05-16T17:49:01Z. 2018-05-16T17:49:01Z. Geological Survey (U.S.), issuing body. United States Geological Survey. English. cartographic image. Public. Colorado and Colorado.
1985. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). U.S. Dept. of the Interior, Geological Survey ; For sale by Branch of Distribution, USGS. English. Public. Colorado. Cenozoic.
