"by Franklin W. Dixon" <br/><br/>
The clue of the broken blade - 11d 

 -  New York, Grosset & Dunlap [1970]  1970 
 - 178 
<br/><br/><label>ISBN: </label>9780448089218 
<br/><br/><label>Dewey Class. No.: </label>F823  / 0002174