McFadzen, Lesley <br/><br/>
Code breakers/  
Lesley McFadzen. – 
 - Australia:   Weldon Owen Pty Ltd,   c2011. 
 - 32 p.:   col.ill.;   22 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>978-1-74252-194-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Breakers.
<br/><br/><label>Dewey Class. No.: </label>GC 600 M478 2011