The lost hero/ 
Rick Riordan. 
 - New York:  Disney Hyperion,  2010. 
 - 553p. 
 -  The heroes of olympus.  vol. 1. .
<br/><br/><label>ISBN: </label>9781423113461 
<br/><br/><label>Dewey Class. No.: </label>FIC R4791 2010