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212. State of Iowa
1912. 2002-11-04T16:39:04Z. 2011-03-25T19:45:56Z. Geological Survey (U.S.). Geological Survey. English. Public. Iowa.
213. State of Iowa
1912. 2002-11-04T16:49:44Z. 2015-10-27T22:19:48Z. Geological Survey (U.S.). Geological Survey. English. Public. Iowa.
214. State of Iowa
1984. 2012-02-28T19:30:17Z. 2015-10-21T15:21:19Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Iowa.
1966. 2018-05-21T17:24:30Z. 2018-05-21T17:24:30Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Iowa and Iowa.
1956. 2018-05-01T17:23:10Z. 2018-09-05T19:36:34Z. R.C. Booth Enterprises, cartographer. R.C. Booth Enterprises. English. cartographic image. Public. Iowa, Marshall County, Marshall County (Iowa), and Marshall County.
1927. 2012-01-04T18:45:32Z. 2015-04-21T22:02:34Z. United States. Bureau of Public Roads. Bureau of Public Roads. English. Public. Iowa.
1971. 2018-04-20T18:43:31Z. 2021-05-04T22:29:48Z. Parker, Mary Combs. Iowa Geological Survey. English. cartographic image. Public. Iowa and Iowa. Ordovician and From 425 to 500 million years ago.
1915. 2002-11-04T16:57:01Z. 2018-10-01T13:52:28Z. Rand McNally and Company. Rand-McNally. English. Public. Iowa.
1921. 2002-11-04T17:05:33Z. 2017-07-11T21:13:43Z. Rand McNally and Company. Rand-McNally. English. Public. Iowa.
