Willoughby, David A <br/><br/>
Horizontal directional drilling : utility and pipeline applications 
by David A. Willoughby 
 - New York  McGraw-Hill  c2005 
 - xiii, 393 p. : ill., plans ; 24 cm 
<br/><br/> Includes bibliographical references (p. 364-365) and index 
<br/><br/><label>ISBN: </label>9780071454735 
<br/><br/><label>ISSN: </label>2005299389 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Directional drilling<br/>Horizontal gas well drilling<br/>Horizontal oil well drilling
<br/><br/><label>Dewey Class. No.: </label>622.3381 WIL