Pilkey, Dav <br/><br/>
Ricky ricotta's :  mighty robot vs the uranium unicorns from uranus / 
Dav Pilkey. 
 - Scholastic,  New York;  2005. 
<br/><br/><label>ISBN: </label>978-0-439-37647-1 
<br/><br/><label>Dewey Class. No.: </label>