Enid Blyton <br/><br/>
"The Secret Seven: Puzzle for the Secret Seven, Secret Seven Fireworks, Good Old Secret Seven" 

 - "London, United Kingdom"  Hodder Children's Books  2005 
 - 512 pages; illustrated; dimensions 20 cm 
<br/><br/><label>ISBN: </label>9780340910924 
<br/><br/><label>Dewey Class. No.: </label>BLY