Strahler, Arthur Newell. <br/><br/>
Modern physical geography / 
Arthur N. Strahler, Alan H. Strahler. 
 - 3rd ed. 
 - New York :  John Wiley & Sons,  1987. 
 - 544 p. :  ill. ;  29 cm. 
<br/><br/><label>ISBN: </label>0471850640 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physical geography.