Hodges, Andrew <br/><br/>
Alan Turing: the enigma/  
Andrew Hodges 
 - London;   Vintage,   1992 
 - 586p. 
<br/><br/><label>ISBN: </label>0099116413 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics - Biography<br/>World War II - Cryptography<br/>Turing, Alan (1912-1954)
<br/><br/><label>Dewey Class. No.: </label>HOD