Enid Blyton <br/><br/>
The Secret seven: Shock for the Secret Seven 

 - India  Enid Blyton ltd  1961 
 - 106 P. ; 18 cm. 
<br/><br/><label>ISBN: </label>9780340893197 
<br/><br/><label>Dewey Class. No.: </label>BLY