Singh, Simon. <br/><br/>
The code book :  how to make it, break it, hack it, crack it / 
Simon Singh. 
 - New York :  Delacorte Press,  [2003], c2001. 
 - 263 p. :  ill ;  21 cm. 
<br/><br/>Includes bibliographical references (p. 255-259) and index. 
<br/><br/> Booklist.  Horn Book.  Wilson's Junior High School. 
<br/><br/> Examines the evolution of codes and their impact on history, looking at key turning points in the development of codes, and explains why codes are relevant in the modern world, discussing the role of encryption in everyday life. 
<br/><br/> Young Adult  Follett Library Resources. 
<br/><br/><label>ISBN: </label>0329332619 0385730624 (pbk.) 1413138659 9780329332617 9780385730624 9781413138658 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coding theory.<br/>Cryptography.<br/>Ciphers--History.<br/>Cryptography.
<br/><br/><label>LC Class. No.: </label>TK5102.92  / .S56 2003 
<br/><br/><label>Dewey Class. No.: </label>652/.8