The Ultra spy
By: F.W. Winterbotham.
Publisher: Macmillan
Published: 1989
Place of publication: London
Language: eng
Number of pages: 258
Subjects: Winterbotham, F.W. 1897-; Great Britain. MI6 -- Biography.; Intelligence officers -- Great Britain -- Biography.; Espionage, British -- History -- 20th century.; World War, 1939-1945 -- Cryptography.; World War, 1939-1945 -- Personal narratives, English.