Encyclopedia of geography (v.4)/ 
by Barney Warf (ed.) 
 - New Delhi:  Sage,  2010. 
 - 1641-2183. 
<br/><br/><label>ISBN: </label>978-1-4129-5697-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography
<br/><br/><label>Dewey Class. No.: </label>R 910.3  / BAR/E.4