Blyton, Enid, <br/><br/>
Secret seven on the trail / 
Enid Blyton ; illustrated by Derek Lucas 
 - 95 pages :  illustrator,  18 cm. 
 - Secret Seven / Enid Blyton ;  4 .
 - Secret Seven / Enid Blyton ;  4 .
<br/><br/><label>ISBN: </label>0340042125 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's stories<br/>English fiction