Hunter, Sara Hoagland,  <br/><br/>
The unbreakable code 

 - [n.p.] :   colour illustrations ;   23 cm 
<br/><br/><label>ISBN: </label>9780875389178 ; 0873589173 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English fiction
<br/><br/><label>Dewey Class. No.: </label>823