Chugh, Chandra Prakash  <br/><br/>
Drilling technology handbook /  
Chandra Prakash Chugh 
 - New Delhi :   Oxford & I.B.H. Publishing Co ,   1977.  
 - xx, 460 p. ;   21.5 cm.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Handbook of drilling technology
<br/><br/><label>Dewey Class. No.: </label>R|H  622.23   /  CHU ; 2