Worrall Les <br/><br/>
Geographic information system   Developments and ap    

 - London  Belhaven Press UK          1990 
 - x,251p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography-Modern
<br/><br/><label>Dewey Class. No.: </label>U:(D6,9(B), N0