1964. 2012-09-24T19:00:02Z. 2013-03-18T20:29:02Z. Danilchik, Walter. U.S. Geological Survey. English. Public. Arkansas, Garland County, and Hot Spring County. Paleozoic.
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1997. 2002-06-01T04:00:00Z. 2004-04-05T13:49:07Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by Geological Survey Information Services. English. Public. Arkansas, Harrison Region, Ozark Mountains, and Missouri. Cambrian.
1982. 2016-01-07T20:49:32Z. 2016-07-13T21:10:34Z. Hosman, R. L. The Survey. English. cartographic image. Public. Arkansas, U.S., and Arkansas. Tertiary and From 2 to 65 million years ago.
1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Missouri, Kansas, Arkansas, and Oklahoma. Quaternary.