Heywood, D. Ian <br/><br/>
An introduction to geographical information systems / 
 Geographical information systems 
Ian Heywood, Sarah Cornelius, and Steve Carver 
 - 2nd ed. 
 - Harlow, England :  Prentice Hall,  2002 
 - xv, 295 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references (p. 267-281) 
<br/><br/><label>ISBN: </label>0130611980 (pbk.)  RM188.90 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographic information systems