Dixon, Franklin W <br/><br/>
The shattered helement / 
Franklin W. Dixon. 
 - New York :  Grosset & Dunlap,  1973. 
 - 180 p. :  illus. ;  20 cm. 
 - Hardy boys mystery stories  52 .
<br/><br/><label>ISBN: </label>0-448-08952-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fiction