Dixon, Franklin W. <br/><br/>
The Secret warning 

 - Grosset & Dunlap  New York  1994 
 - 176p. 
 - Hardy boys mystery stories: 17. .
<br/><br/><label>ISBN: </label>9780448089171 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MYSTERY FICTION
<br/><br/><label>Dewey Class. No.: </label>823  / DIX