Bownocker, J. A.  1865-1928. <br/><br/>
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. .
<br/><br/> Some maps are folded.  Includes index. 
<br/><br/> Ohio coal supply and its exhaustion /  Frank A. Ray. 
<br/><br/><label>LCCN: </label>gs 30000278  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal--Ohio.
<br/><br/><label>LC Class. No.: </label>QE151  / .A18 no. 34 
<br/><br/><label>Gov. Doc. Class. No.: </label>ONR 84.3:34