Wentworth, Chester K. <br/><br/>
The shapes of beach pebbles. 

 - Washington  Government Printing Office  1922 
 - pp. 75-83 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA