McCulloch, C. M. <br/><br/>
Geologic investigations of underground coal mining problems / 
C. M. McCulloch, P. W. Jeran and C. D. Sullivan. 
 - Washington, D.C. :  U.S. Dept. of the Interior,  [1975] 
 - 30 p. :  ill. 
 - Report of investigations / Bureau of Mines, U.S. Department of the Interior ;  8022 .
 - Report of investigations (U.S. Department of the Interior.  8022 .
<br/><br/><label>LCCN: </label>92045007     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining.