Blyton, Enid,  <br/><br/>
The mystery series volume 4 

 - 247 pages ;   20 cm 
<br/><br/> 3 books in 1 
<br/><br/><label>ISBN: </label>9781405275712 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's stories, English.
<br/><br/><label>Dewey Class. No.: </label>823