Aguilar, David A.  <br/><br/>
13 Planets :   The Latest View of the Solar System / 
D. A. Aguilar. 
 - Washington :   National Geographic,   2011. 
 - 60 p. :  ill.;  23 cm. 
 - National Geographic kids. .
<br/><br/> Glossary, p. 58-59 
<br/><br/>Index, p. 60 
<br/><br/><label>ISBN: </label>9781426307706 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Solar system <br/>Planets