Singh, Simon <br/><br/>
The code book : the secret history of codes and code-breaking 
by Simon Singh 
 - London:   HarperCollins Publishers  1999 
 - xiii, 402p., app., glos., ind.  20 cm x 13 cm 
<br/><br/><label>ISBN: </label>9780007453085 
<br/><br/><label>Subjects--Topical Terms: </label><br/>alice and bob go public<br/>chiper of Mary Queen scots<br/>cracking enigma<br/>language barrier<br/>mechanisation secrecy<br/>pretty good privacy<br/>quantum leap
<br/><br/><label>Dewey Class. No.: </label>652.8  / SIN