The official history of British Sigint 1914-1945.
By: by Frank Birch ; edited by John Jackson.
Contributors: Jackson, John.
Series: Bletchley archive -- iv
Publisher: Military Press
Published: 2007
Place of publication: London
Language: eng
Number of pages: 282
ISBN-13: 9780854202713
Subjects: Military intelligence -- Great Britain -- History -- 20th century
Notes: Includes bibliographical references (p. 266) and index.