Willoughby, David A. <br/><br/>
Horizontal directional drilling :   utility and pipeline applications / 
David A. Willoughby 
 - New York:  McGraw-Hill,   2005 
 - xiii, 393 p.:   ill.;   24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>007145473X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Directional drilling<br/>Horizontal oil well drilling<br/>Horizontal gas well drilling