Fields, Herbert H. <br/><br/>
Commercial-quality gas from the multipurpose borehole located in the Pittsburgh coalbed / 
by Herbert H. Fields, John H. Perry, and Maurice Deul. 
 - Washington, D.C. :  U.S. Dept. of the Interior,  1975. 
 - [3], 14 p. :  ill. 
 - Report of investigations / Bureau of Mines, U.S. Department of the Interior ;  8025 .
 - Report of investigations (U.S. Department of the Interior.  8023 .
<br/><br/><label>LCCN: </label>92045009     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mine gases.<br/>Natural gas