Marks, Leo <br/><br/>
Between silk and cyanide : a codemaker's war, 1941-1945 

 - New York:  Free Press,  1998 
 - 613 p. : ill. ; 25 cm 
<br/><br/><label>ISBN: </label>9780684867809 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptographers - Great Britain - Biography
<br/><br/><label>Dewey Class. No.: </label>940.548641 MAR