Analyses of the coals of Ohio /
Bownocker, J. A. 1865-1928.
Analyses of the coals of Ohio / by J.A. Bownocker and Ethel S. Dean. - Columbus, Ohio : Geological Survey of Ohio, 1929 - 360 p. : ill., maps ; 25 cm. - Bulletin ; no. 34 . - Bulletin (Geological Survey of Ohio) ; no. 34. .
Some maps are folded. Includes index.
Ohio coal supply and its exhaustion / Frank A. Ray.
gs 30000278
Coal--Ohio.
QE151 / .A18 no. 34
ONR 84.3:34
Analyses of the coals of Ohio / by J.A. Bownocker and Ethel S. Dean. - Columbus, Ohio : Geological Survey of Ohio, 1929 - 360 p. : ill., maps ; 25 cm. - Bulletin ; no. 34 . - Bulletin (Geological Survey of Ohio) ; no. 34. .
Some maps are folded. Includes index.
Ohio coal supply and its exhaustion / Frank A. Ray.
gs 30000278
Coal--Ohio.
QE151 / .A18 no. 34
ONR 84.3:34