The Pittsburgh no. 8 and Redstone no. 8A coal beds in Ohio /
De Long, Richard M.
The Pittsburgh no. 8 and Redstone no. 8A coal beds in Ohio / by Richard M. DeLong. - Columbus : State of Ohio, Dept. of Natural Resources, Division of Geological Survey, 1955. - 49 p. : ill., maps (some col.) ; 28 cm. - Report of investigations ; no. 26 . - Report of investigations (Ohio. Division of Geological Survey) ; no. 26. .
Includes bibliographical references (p. 48-49).
gs 56000081
Coal--Ohio
Coal mines and mining--Ohio
QE151 / .A186 no. 26
ONR 84.19:26
The Pittsburgh no. 8 and Redstone no. 8A coal beds in Ohio / by Richard M. DeLong. - Columbus : State of Ohio, Dept. of Natural Resources, Division of Geological Survey, 1955. - 49 p. : ill., maps (some col.) ; 28 cm. - Report of investigations ; no. 26 . - Report of investigations (Ohio. Division of Geological Survey) ; no. 26. .
Includes bibliographical references (p. 48-49).
gs 56000081
Coal--Ohio
Coal mines and mining--Ohio
QE151 / .A186 no. 26
ONR 84.19:26