Geograhical information systems for popualation st 

 - New York  United Nations U S A       1997 
 - 92p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rural Geography
<br/><br/><label>Dewey Class. No.: </label>U45:(D6,9(B)s, N7/UN