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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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.

0000; Gale Group; Linguagem: English

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"Geological corps: Charles A. White, state geologist. Orestes H. St. John, assistant. Rush Emery, chemist." Includes indexes. Includes bibliographical references. Book.

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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.