Dixon, Franklin W. <br/><br/>
The Hardy boys : double down / 
Franklin W. Dixon 
 - New York :  Aladdin,  c2009 
 - 167 p. ;  20 cm. 
 - Undercover brothers .
<br/><br/><label>ISBN: </label>9781416974468 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mystery--Juvenile fiction<br/>Hardy Boys (Fictitious characters)--Juvenile fiction