المؤلفون: Grey, Christopher, 1964-

مصطلحات موضوعية: Great Britain. Government Communications Headquarters -- History., World War, 1939-1945 -- Cryptography., World War, 1939-1945 -- Secret service -- Great Britain., World War, 1939-1945 -- Electronic intelligence -- Great Britain., Intelligence service -- Social aspects -- Great Britain -- History -- 20th century., World War, 1939-1945 -- England -- Bletchley (Buckinghamshire), Corporate culture -- England -- Bletchley (Buckinghamshire) -- History -- 20th century., Organization -- Case studies., Corporate culture -- Case studies., BUSINESS & ECONOMICS / Organizational Behavior.

جغرافية الموضوع: Bletchley (Buckinghamshire, England) -- History -- 20th century.