Heywood,Ian <br/><br/>
An Introduction to geographical information systems / 
Heywood,Ian. 
 - New York:  addison Wesley Longman,  2000. 
 - xiii,279p;25cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9814053228 
<br/><br/><label>Dewey Class. No.: </label>900 HEY