Thornbury, William D.  1900- <br/><br/>
Principles of geomorphology / 
William D. Thornbury 
 - New York :  John Wiley,  c1954 
 - ix, 618 p. :  ill. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 8.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, structural
<br/><br/><label>Dewey Class. No.: </label>551.4