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2000. 2002-06-01T04:00:00Z. 2016-07-21T21:15:56Z. Geological Survey (U.S.). The Survey ; Information Services [distributor]. English. cartographic image. Public. Colorado, San Juan County, and San Juan County.
1999. 2002-07-18T14:23:19Z. 2016-11-29T22:10:42Z. Scott, Glenn Robert, 1918-. The Survey ; Information Services [distributor]. English. Public. Colorado.