Willoughby, David A. <br/><br/>
Horizontal directional drilling :  utility and pipeline applications 

 - New Delhi:  McGraw Hill Education,  2005. 
 - xiii, 393 p. 
<br/><br/><label>ISBN: </label>9780071454735 007145473X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Directional drilling
<br/><br/><label>Dewey Class. No.: </label>622.3381 WIL