Dixon, Franklin W. <br/><br/>
The masked monkey  
by Franklin W. Dixon. 
 - New York :  Grosset & Dunlap,  c1972. 
 - [178] p. :  ill. ;  20 cm. 
 - Hardy boys mystery stories;  51. .
<br/><br/> The Hardy brothers' search for the missing son of a wealthy industrialist leads them to Brazil and great danger. 
<br/><br/><label>ISBN: </label>0448089513  5.95 0448189518 (lib) 
<br/><br/><label>LCCN: </label>71180994 /AC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mystery stories.