Mapel, W. J.  1922- <br/><br/>
A thick coal bed near Lake De Smet, Johnson County, Wyoming, 
by William J. Mapel, James M. Schopf, and James R. Gill. 
 - Washington,  1953. 
 - iii, 47 p.  illus., maps.  27 cm. 
 - Geological Survey circular  228 .
 - Geological Survey (U.S.).  Circular ;  228. .
<br/><br/> Part of illustrative matter is folded in pocket.  "Correction" slip inserted, p. iii. 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>gs 53000232  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal--Wyoming--Johnson County.<br/>Geology--Wyoming--Johnson County.<br/>Borings--Wyoming--Johnson County.
<br/><br/><label>LC Class. No.: </label>QE75  / .C5 no. 228 
<br/><br/><label>Dewey Class. No.: </label>553.2