Heywood, Ian et. al. <br/><br/>
Introduction to geographical information system 

 - 4 
 - Harlow  Pearson  2011 
<br/><br/><label>ISBN: </label>9780273722595 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GIS
<br/><br/><label>Dewey Class. No.: </label>910.285 HEY