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Date: 2014-08-18 10:11:33 | PHYSIOGRAPHY OF IOWA The following is a brief summary of the bedrock history and development of the present surface. At the close of the Cretaceous Period the area which is now Iowa was a land surface. The soft CretaceouAdd to Reading ListSource URL: s-iihr34.iihr.uiowa.eduDownload Document from Source WebsiteFile Size: 37,52 KBShare Document on Facebook |