Chugh, Chandar Parkash <br/><br/>
Diamond Drilling / 
Chandar Parkash Chugh 
 - New Delhi :  Oxford & IBH Publishing Co.,  1971 
<br/><br/>Includes references & index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drilling
<br/><br/><label>Dewey Class. No.: </label>627.75  / CHU