Butler, David R <br/><br/>
Zoogeomorphology : animals as geomorphic agents 
David R Butler 
 - Cambridge  Cambridge University Press  1995 
 - viii, 231 p. : ill. ; 24 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780521039321 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biogeomorphology
<br/><br/><label>Dewey Class. No.: </label>561.522 BUT