Riordan, Rick  <br/><br/>
The houses of Hades / 
Rick Riordan 
 - New York :  Disney ,  2013 
 - 597 pages :  20 cm 
 - The heroes of Olympus :  4 .
<br/><br/>R<br/> 
<br/><br/> "Greek and Roman demigods from the Prophecy of Seven must work together to seal the Doors of Death--and help Percy and Annabeth escape the Underworld in the process"-- 
<br/><br/> 680<br/>  Lexile<br/>  R<br/>  Raz-Plus<br/> 
<br/><br/><label>ISBN: </label>9781368051712 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Greek gods --Greek mythology<br/>Roman mythology--Children's
<br/><br/><label>LC Class. No.: </label>PZ7 .R48298 .H 
<br/><br/><label>Dewey Class. No.: </label>813.6