Report on the Geological survey of the state of Iowa : embracing the results of investigations made during portions of the years 1855, 56 & 57 Iowa Geological Survey. creator Hall, James, 1811-1898 contributor Whitney, J. D. (Josiah Dwight), 1819-1896 contributor text book Des Moines Published by authority of the Legislature of Iowa 1858 1858
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ENG Vol. 2 never published. Vol. 1, pt. 1. Geology. pt. 2. Palaeontology. Geology Iowa Paleontology https://www.biodiversitylibrary.org/bibliography/31802 9332684 10.5962/bhl.title.31802 NIU