DeMers, Michael N. <br/><br/>
Fundamentals of geographic information systems / 
DeMers, Michael N. 
 - 4th ed. 
 - Hoboken:  John Wiley & Sons,  2009. 
 - xiii, 443p.; 24cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9780470129067 
<br/><br/><label>Dewey Class. No.: </label>910.285 DEM