Thornbury, William D.  1900- <br/><br/>
Principles of geomorphology / 
by William D. Thornbury. 
 - 2nd ed. 
 - New York:  Wiley,  1969. 
 - xi,594 p.:  fold plate ill,maps;  24 cm. 
<br/><br/>Bibliography: p.573-576. 
<br/><br/><label>ISBN: </label>0471861979 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Structural.<br/>Geomorphology.