"Blyton, Enid" <br/><br/>
The secret seven,  good old secret seven 

 - London :  Hodder Children Book ,  1957 . 
 - 118 pages , 
<br/><br/><label>ISBN: </label>0340569913 
<br/><br/><label>Dewey Class. No.: </label>F823  / ENI-S