Riordan, Rick,  <br/><br/>
The heroes of olympus /  The house of hades: 
Rick Riordan.  
 - New York:  Disney . Hyperion Books,   2013. 
 - 597 pages ;  21 cm. 
 - The Heroes of Olympus series .
<br/><br/>includes glossary 
<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/><br/>English 
<br/><br/><label>ISBN: </label>9781423146728 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fiction. <br/>Mythology, Roman - Fiction. <br/>Mythology, Greek --Fiction<br/>Giants -Fiction.<br/>Hera - Fiction<br/>Gaia - Fiction
<br/><br/><label>Dewey Class. No.: </label> / R47