Dixon, Franklin W.  <br/><br/>
the hard boys mystery stories  51   : the masked monkey  
Franklin W. Dixon  
 - New York   Grosset  & Dunlap, Inc    c1972 
 - 178  illustrations   19cm  
<br/><br/> In The Masked Monkey (#51), Frank and Joe Hardy travel to Brazil to locate the missing son of a wealthy industrialist. The brothers uncover a dangerous criminal organization specializing in identity alteration and face exotic threats, including a trained killer monkey. Key clues are provided by Chet Morton’s hobby of retrieving golf balls.  
<br/><br/><br/>English  
<br/><br/><label>Dewey Class. No.: </label>Fic. D621m 2008