Hemphill, Gary B. <br/><br/>
Blasting Operations :    /  
Hemphill, Gary B. 
 - 1a ed. 
 - New Yor ;   McGRAW-HILL ,   1981 
 - 251 p. ;   24 cm. :    
<br/><br/><label>ISBN: </label>70280932 
<br/><br/><label>Subjects--Index Terms: </label>EXPLOTACIÓN DE ROCAS MINERÁA 
<br/><br/><label>Universal Decimal Class. No.: </label>622233