The Secret Seven ; Secret Seven adventure /
Blyton, Enid.
Lucas, Derek.
Blyton, Enid.Secret Seven adventure.
[Sevenoaks] : Knight,
1986.
The Secret Seven / by Enid Blyton. Originally published: Leicester : Brockhampton, 1949 -- Secret Seven adventure / Enid Blyton. Originally published; Leicester : Brockhampton, 1950.