Riordan, Rick  <br/><br/>
Percy Jackson and the Olympians :  the demigold files 

 - New York :  Disney, Hyperion Books,  c2009. 
 - 151 p. : ill., photos 
<br/><br/><label>ISBN: </label>9781423121664 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fiction
<br/><br/><label>Dewey Class. No.: </label>R479p 2009