Burrough, Peter A.  & McDonnell, Racheal A. <br/><br/>
Principles of geographical information systems . 

 - Oxford   New Delhi  1998 
 - xiii, 338 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>910.285 Bu/McD