Thornbury, William D. (William David), 1900- <br/><br/>
Principles of geomorphology / 
Thornbury, William D. (William David), 1900- 
 - 2nd ed. 
 - x, 594 p. : ill. ; 21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomorphology<br/>Géomorphologie<br/>Tectonique.
<br/><br/><label>Dewey Class. No.: </label>551.41