"MARY BOWEN AND PRINTHA ELLIS","[story by Roderick Hunt]; [pictures by Alex Brychta]" <br/><br/>
The magic key 

 -  Oxford : Oxford University Press, c1986.  1988 
 - 24 
<br/><br/><label>ISBN: </label>0199160325 
<br/><br/><label>Dewey Class. No.: </label>420  / 100245