Knapp, Brian,  1946- <br/><br/>
Challenge of the natural environment / 
B. J. Knapp, S. R. J. Ross and D. L. R. McCrae 
 - Essex :  Longman Group Ltd.,  1989 
 - 272 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0582355974  RM54.99 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geography