Heywood, I. <br/><br/>
An introduction to geographical information systems  [Book]. 

 - 2nd 
 - India  Pearson education  2005 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>8178089823 
<br/><br/><label>Subjects--Topical Terms: </label><br/>An introduction to geographical information systems