Dixon, Franklin W. <br/><br/>
The secret warning / 
by Franklin W. Dixon. 
 - New York :  Grosset & Dunlap,  c1966. 
 - 176 p. :  ill. ;  20 cm. 
 - His Hardy boys mystery stories ;  17 .
 - Dixon, Franklin W.  Hardy boys mystery stories ;  17. .
<br/><br/> Originally published in 1938. 
<br/><br/><label>ISBN: </label>0448099173 (trade ed.) :  0448189178 (lib. ed.) :  $1.95 ;  $3.39 
<br/><br/><label>LCCN: </label>66012695  
<br/><br/><label>LC Class. No.: </label>PZ7.D644  / Sew4