Heywood, D. Ian <br/><br/>
An introduction to geographical information systems 
Ian Heywood, Sarah Cornelius and Steve Carver 
 - 3rd ed 
 - London  Addison Wesley Longman  2009 
 - xxxiii, 426 p. : ill. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9788131731932 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems
<br/><br/><label>Dewey Class. No.: </label>910.285 HEY