Deavours, Cipher A. <br/><br/>
Machine cryptography and modern cryptanalysis / 
Cipher A. Deavours, Louis Kruh 
 - Norwood, Mass. :  Artech House,  1985 
 - xiv, 258 p. :  ill. ;  24 cm. 
 - The Artech House Telecom Library .
<br/><br/><label>ISBN: </label>0890061610  RM110.00 
<br/><br/><label>LCCN: </label>84-073275 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography<br/>Machine ciphers<br/>World War--Cryptography--1939 - 1945