Lewin, Ronald. <br/><br/>
Ultra goes to war :  the secret story / 
Ronald Lewin. 
 - London :  Hutchinson,  1978. 
 - 397 pages, 6 unnumbered leaves of plates :  illustrations ;  24 cm 
<br/><br/>Includes bibliographical references (pages 379-383) and index. 
<br/><br/>The glow-lamp machine -- The British breakthrough -- A plan called Smith -- Station X -- The secret Limeys -- The Mediterranean shores -- Mr Churchill's secret source -- Ultramarine -- The American involvement -- Alamein to the Alps -- Overture and beginners: the prelude to D Day -- Finale and curtains: from D Day to victory. 
<br/><br/> Relying upon his memory and some government documents the author examines Ultra, the intelligence network that intercepted German radio transmissions and broke their coded contents during World War II. 
<br/><br/><label>ISBN: </label>0091344204 9780091344207 
<br/><br/><label>LCCN: </label>78325021  
<br/><br/><label>Nat. Bib. Agency Control No.: </label>009-13442  Uk 
<br/><br/><label>Subjects--Chronological Terms: </label><br/>1939-1945 
<br/><br/><label>Subjects--Topical Terms: </label><br/>World War, 1939-1945--Great Britain.<br/>Guerre mondiale, 1939-1945--Service secret--Grande-Bretagne.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Great Britain.
<br/><br/><label>LC Class. No.: </label>D810.S7  / L58