Bibliographic Details
Main Creator:	Winterbotham, F. W. (Frederick William), 1897-1990
Format:	Book
Language:	English
Published / Created:	London : Weidenfeld and Nicolson, c1974, 1976 printing.
Subjects:	Winterbotham, F. W. > (Frederick William), > 1897-1990 World War, 1939-1945 > Cryptography. World War, 1939-1945 > Secret service > Great Britain. World War, 1939-1945 > Personal narratives, British.
Notes:	Includes index. Physical description: xiii, 199 p. ; 23 cm. more
ISBN:	0297768328 :