Peng Syd S <br/><br/>
Coal mine ground control 

 - New York  John wiley  1978 
 - xiii,450 p. 
<br/><br/><label>ISBN: </label>0471041211 
<br/><br/><label>Dewey Class. No.: </label>S/C-S/T HZ551:43 L8;3