Книги автора «Iowa Geological Survey»

First and second annual report of progress by the state geologist and the assistant and chemist on the Geological survey of the state of Iowa (1868) (Iowa Geological Survey)

Report on the Geological Survey of the State of Iowa: Embracing the Results of the Investigations Ma (Iowa Geological Survey)

Report on the Geological Survey of the State of Iowa (Iowa Geological Survey)

First and Second Annual Report of Progress by the State Geologist and the Assistant and Chemist (Iowa Geological Survey)