De Long, Richard M. <br/><br/>
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. .
<br/><br/>Includes bibliographical references (p. 48-49). 
<br/><br/><label>LCCN: </label>gs 56000081  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal--Ohio<br/>Coal mines and mining--Ohio
<br/><br/><label>LC Class. No.: </label>QE151  / .A186 no. 26 
<br/><br/><label>Gov. Doc. Class. No.: </label>ONR 84.19:26