Theodorou, Rod <br/><br/>
I wonder why triceratops had horns and other questions about dinosaurs / 
Rod Theodorou. 
 - Danbury,CT :  Grolier,  1994. 
 - 32 p.:   col. ill.  29 cm. 
 - I wonder why .
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>978-0-7534-0521-5 
<br/><br/><label>LC Class. No.: </label>567.91 T34t 2008