Thornbury, W. D. <br/><br/>
Principles of geomorphology 

 - 2nd Edition 
 - New York  John Wiley and Sons  1969 
 - 594p. 
<br/><br/><label>ISBN: </label> USD 10.10 
<br/><br/><label>Source: </label> USD 10.10 
<br/><br/><label>Dewey Class. No.: </label>551.4 THO