Blyton, Enid <br/><br/>
Three cheers, secret seven 

 - London :   Hodder Children's Books,  1992 
 - 105 p.  
<br/><br/><label>ISBN: </label>9780340569870 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Detective And Mystery Stories  <br/>Children's stories