Dixon, Franklin W. <br/><br/>
Extreme danger / 
Franklin W. Dixon. 
 - New York  Aladdin Paperbacks  2005 
 - 165 p. 
 - Hardy boys undercover brothers ;  #1 .
 - Dixon, Franklin W.  Hardy boys, undercover brothers ;  #1. .
<br/><br/> Frank and Joe travel to Philadelphia where they intend to prevent an attack on an extreme sports contest called the Big Air Games. 
<br/><br/> 008-012. 
<br/><br/><label>ISBN: </label>9781416900023  (pbk.) 
<br/><br/><label>LCCN: </label>2004113061 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hardy Boys (Fictitious characters)--Juvenile fiction.<br/>Extreme sports--Juvenile fiction.<br/>Hardy Boys (Fictitious characters)--Fiction.<br/>Extreme sports--Fiction.<br/>Mystery and detective stories.<br/>Young Learners<br/>Children Fiction Stories
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Philadelphia (Pa.)--Juvenile fiction.<br/>Philadelphia (Pa.)--Fiction.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Mystery fiction.<br/>Children's stories.
<br/><br/><label>LC Class. No.: </label>MLCS 2006/43644 
<br/><br/><label>Dewey Class. No.: </label>Fiction DIX-F