Harris, Robert <br/><br/>
Enigma 
/ Robert Harris 
 - 389 pages 
<br/><br/> A member of a top-secret team of British cryptographers, Tom Jericho succeeds in cracking "Shark," the impenetrable operational cipher used by Nazi U-boats, but when the Germans change the code, Jericho must break the new code before the traitor among his group can stop him. 
<br/><br/><label>ISBN: </label>0099992000 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945--Secret service--Fiction
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Thrillers (Fiction)
<br/><br/><label>Dewey Class. No.: </label>Fic