Blyton, Enid <br/><br/>
The Secret of seven, Puzzle for the secret seven 

 - 1st. 
 - London  Hodder children books  2004 
 - 154p. 
<br/><br/><label>ISBN: </label> 75.00 
<br/><br/><label>Dewey Class. No.: </label>823.912 BLY