1981. 2018-05-21T17:33:06Z. 2018-05-21T17:33:06Z. Anderson, Raymond R. Iowa Geological Survey. English. cartographic image. Public. Iowa and Iowa.
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1981. 2002-06-01T04:00:00Z. 2023-02-14T04:01:25Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. San Juan River Watershed (Colo.-Utah), Arizona, New Mexico, and San Juan River Watershed.
1981. 2015-06-29T19:59:32Z. 2015-07-14T22:10:12Z. Wynn, Jeffrey C. U.S. Geological Survey. English. cartographic image. Public. New Mexico, Grant County, Luna County, Hidalgo County, Arizona, Greenlee County, Cochise County, Graham County, and U.S.
1981. 2002-06-01T04:00:00Z. 2023-01-10T04:01:27Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. California.
1981. 2002-06-01T04:00:00Z. 2023-02-08T04:01:20Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. California.