Dixon, Franklin W. <br/><br/>
The Hardy Boys, undercover brothers. #28, Galaxy X  eng 

 - New York  Aladdin Paperbacks  2009 
 - 164 
 - Hardy boys, undercover brothers .
<br/><br/> A new theme park is about to open, but someone wants to stop it. The park's owner has received threatening e-mails, and accidents are becoming more frequent. Frank and Joe must find the saboteur or someone could get seriously hurt 
<br/><br/><label>ISBN: </label>9781416978015 
<br/><br/><label>Dewey Class. No.: </label>823.912  / DIX-H