Heywood, Ian .- <br/><br/>
An Introduction to Geographical Information Systems / 
Ian Heywood...at el 
 - 2nd ed. 
 - Delhi :  Pearson education publishers ,  c2002. 
 - 311p.;  ill.table. drawings   24cm. 
<br/><br/> includes; bibliographical references and indexes 
<br/><br/><label>ISBN: </label>9788178089829 
<br/><br/><label>Subjects--Topical Terms: </label>--Geographic information systems
<br/><br/><label>Dewey Class. No.: </label>910.285 HEY