The riddle of the hidden treasure /
Blyton, Enid.
Ludlow, Patricia.
Blyton, Enid.Treasure hunters.
Blyton, Enid.Young adventurers and the hidden treasure.
Worksop : Award Publications,
2009.
"... first published in Great Britain under the title The treasure hunters by Newnes Ltd in 1940. First published by Award Publications Limited 2004 as The young adventurers and the hidden treasure"--T.p. verso.
Treasure troves