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Report on the geological survey of the State of Iowa, to the Thirteenth General Assembly, January, 1870, containing results of examinations and observations made within the years 1866, 1867, 1868, and 1869

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By: Iowa Geological Survey. - White, Charles A. (Charles Abiathar), - Parvin, Theodore Sutton, - St. John, O. H. (Orestes Hawley) - Emery, Rush. - Iowa Geological Survey.

Publication info: Des Moines, Printed and Pub. by Mills, 1870

Holding Institution: Smithsonian Libraries and Archives