Report of a geological reconnoissance of Indiana,
made during the years 1859 and 1860, under the direction of the late David Dale Owen, M.D., state geologist.
By Richard Owen, M.D., principal assistant, now state geologist, also, reports on the analysis of the soils, by R. Peter ... survey of the coal fields, by Leo Lesquereux ... and topographical work, by Joseph Lesley ...

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