Elder, Curtis H. <br/><br/>
Hydraulic stimulation increases degasification rate of coalbeds / 
by C. H. Elder and Maurice Deul ; Pittsburgh Mining and Safety Research Center. 
 - [Washington] :  U.S. Dept. of the Interior, Bureau of Mines,  [1975] 
 - [3], 17 p. :  ill. 
 - Report of investigations ;  8047 .
 - United States.  Bureau of Mines.  Report of investigations ;  8047 .
 - Report of investigations (United States. Bureau of Mines) ;  8047. .
<br/><br/> Item 637-A 
<br/><br/><label>LCCN: </label>91055082     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Degassing of coal.