Chorley, Richard J. <br/><br/>
Physical geography:  a systems approach/ 
Richard J. Chorley, Barbara A. Kennedy. 
 - London:  Prentice-Hall International,  1971. 
 - ii-xxi, 370 pages :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>013669036X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geography.<br/>System analysis.