Note 145 — Chapter II
Reading edition
Prof. Orton in Geology of Highland County in “Progress of the Ohio Geological Survey in 1870,” published 1871, and in vol. i. of State Geological Report, p. 442.
Reading edition
Prof. Orton in Geology of Highland County in “Progress of the Ohio Geological Survey in 1870,” published 1871, and in vol. i. of State Geological Report, p. 442.