Blyton, Enid <br/><br/>
The mystery of the spiteful letters / 
Enid Blyton ; illustrated by Rodney Sutton 
 - London :  Armada ,  1991. 
 - 125 pages ; 3 unnumbered pages :  illstrations ;  18 cm 
 - Five Find-Outers Mystery Stories  4 .
<br/><br/><label>ISBN: </label>9780006931973 (paperback) 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Youth Fiction<br/>Detective and mystery fiction<br/>Adventure Stories
<br/><br/><label>Dewey Class. No.: </label>ETF BLYT