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

 - New York :  John Wiley,  1954. 
 - ix, 618 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomorphology.
<br/><br/><label>LC Class. No.: </label>GB401.5  / .T46