Heywood, D. Ian. <br/><br/>
An introduction to geographical information systems 
Ian Heywood, Sarah Cornelius and Steve Carver. 
 - Upper Saddle River, N.J.  Prentice Hall  c1998. 
 - xiii, 279 p., [8] p. of plates  ill., maps (some col.)  25 cm. 
<br/><br/>Includes bibliographical references (p. 253-266) and index. 
<br/><br/><label>ISBN: </label>0582089409 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Carver, Steve.<br/>Cornelius, Sarah.<br/>Geographic information systems.