Elementary Surveying:   An Introduction / 
GHILAN, Charles D. ; WOLF, Paul R. 
 - 13th ed. 
 - Boston:   Prentice Hall,   2012 
 - 958p.  ill. ( photos ),   24cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>978-0-13255434-3 
<br/><br/><label>LC Class. No.: </label>TA545  /  .G45 2012