00912cam a2200277 4500 gs 67000300 DLC 20260227111421.0 700123s1967 ohub b 00010 eng c gs 67000300 //r882 U.S. Geol. Survey. Library QE151 .A186 no. 64 557.71/08 s Owens, Gordon L. The Precambrian surface of Ohio, by Gordon L. Owens. Columbus, 1967. i, 8 p. fold. col. map. 26 cm. Ohio. Division of Geological Survey. Report of investigations, no. 64 Cover title. Text and map issued in portfolio. Bibliography: p. 3. Geology Ohio. Geology, Stratigraphic Precambrian. Borings Ohio. Report of investigations (Ohio. Division of Geological Survey) ; no. 64. 30383 30383