Unwin, David J. <br/><br/>
Computer programming for geographers 
David J. Unwin and John A. Dawson 
 - London  Longman  1985 
 - 252 p. ; 24 cm. 
<br/><br/><label>ISBN: </label>0582300959 
<br/><br/><label>LCCN: </label>84-5690 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography--Data processing