Longley, Paul A <br/><br/>
Geographical information systems 

 - New York   John Willey & Sons  1999 
 - 580p. 
<br/><br/><label>ISBN: </label>0471331325 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geographical Information systems
<br/><br/><label>Dewey Class. No.: </label>910.285 LON