Thornbury, William D.  1900- <br/><br/>
Principles of geomorphology 
William D. Thornbury. 
 - 2d ed. 
 - New York,  John Wiley & Sons, Inc.  1969 
 - xi, 594 p.:  ill.;  23 cm. 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>047186190 
<br/><br/><label>Source: </label>B-1712 
<br/><br/><label>LCCN: </label>68008323  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomorphology.
<br/><br/><label>LC Class. No.: </label>GB400  / .T46 1969 
<br/><br/><label>Dewey Class. No.: </label>551.4