An Introduction to geographical information systems :  information systems / 
by Ian Heywood, ... [et al.]. 
 - 2n Edition. 
 - Delhi :  Pearson Education,  c2006 
 - xv,287 p. :  ill. ;  25 cm. 
<br/><br/>Includes  index. 
<br/><br/><label>ISBN: </label>9788177587845 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographical information systems.
<br/><br/><label>Dewey Class. No.: </label>910.285  / HEL 2006