Benson, D.C <br/><br/>
Smoother pebble  mathematical explorations 
D.C. Benson 
 - Oxford  Oxford University Press  2003 
 - x  266 
<br/><br/><label>ISBN: </label>9780195144369 
<br/><br/><label>Dewey Class. No.: </label>28  / BENS