Marks, Leo <br/><br/>
Between silk and cyanide : a codemaker's war, 1941-1945 
Leo Marks 
 - New York  Free Press  c1998 
 - 613 p. : ill. ; 25 cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780684867809 
<br/><br/><label>ISSN: </label>99017581 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptographers - Great Britain - Biography<br/>Marks, Leo<br/>World War, 1939-1945 - Cryptography<br/>World War, 1939-1945 - Personal narratives, British<br/>World War, 1939-1945 - Secret service - Great Britain
<br/><br/><label>Dewey Class. No.: </label>940.548641 MAR