Heywood Ian <br/><br/>
An introduction to geographical information sysytems/ 
Ian Heywood...[et al.]. 
 - New York:  Longman,  1998. 
 - xiii,279p.; 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>0582089409 
<br/><br/><label>Subjects--Topical Terms: </label><br/>geographical information systems
<br/><br/><label>LC Class. No.: </label>G70.212 .H49 1998