Thornbury, William D. <br/><br/>
Principles of geomorphology/ 
William D. Thornbury. 
 - 2nd ed. 
 - New Delhi :   CBS Publishers,   2002. 
 - xi, 594p. : ill., 21cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>8123908113 [pbk.] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Landforms.<br/>Geomorphology.
<br/><br/><label>Dewey Class. No.: </label>551.41  / T497