"by Franklin W. Dixon" <br/><br/>
The secret of the caves 

 -  New York, Grosset & Dunlap [1965, c1964]  1988 
 - 140 
<br/><br/><label>ISBN: </label>0448089076 
<br/><br/><label>Dewey Class. No.: </label>F823  / 3338