"Rod Theodorou" <br/><br/>
I wonder why Triceratops had horns 

 -  London : Kingfisher Books, 1994.  2003 
 - 32 
<br/><br/><label>ISBN: </label>9780753407608 
<br/><br/><label>Dewey Class. No.: </label>500  / 4776