Codebreakers : images of the National Archives /

Bibliographic Details
Main Author:	Twigge, Stephen Robert, 1962- (Author)
Corporate Author:	National Archives (Great Britain)
Format:	Book
Language:	English
Published:	Barnsley, South Yorkshire, UK : Pen & Sword History, [2020]
Subjects:	World War, 1939-1945 > Cryptography. World War, 1939-1945 > Secret service > Great Britain. World War, 1939-1945 > Electronic intelligence > Great Britain. Intelligence service > Great Britain > History.

Description
Physical Description:	132 pages : illustrations, maps ; 25 cm.
Bibliography:	Includes bibliographical references and index.
ISBN:	1526730804 9781526730800