Dixon, Franklin W.  <br/><br/>
The hardy boys :  secret files #4 : Hopping mad 
 Hopping mad 

 - New York :  Aladdin,   2000 
 - 84 p.  
 - The hardy boys ;  secret files #4 .
<br/><br/><label>ISBN: </label>9781416993957 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hardy Boys (Fictitious characters) --Fiction<br/>Mad--Fiction