Smith, Michael,  1952 May 1- <br/><br/>
Station X :  the codebreakers of Bletchley Park / 
Michael Smith. 
 - London :  Channel 4 Books,  1998. 
 - 184p. 
<br/><br/> Accompanies the Channel 4 television series. 
<br/><br/><label>ISBN: </label>0752221892 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Great Britain. Government Communications Headquarters 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945--Cryptography.<br/>World War, 1939-1945--Secret service--Great Britain.<br/>World War, 1939-1945--Electronic intelligence--Great Britain.<br/>Cryptography--History.--Great Britain