official history of British Sigint 1914-1945
By: by Frank Birch ; edited by John Jackson.
Contributors: Jackson, John.
Series: Bletchley archive -- v. 3
Publisher: Military Press
Published: 2004
Place of publication: Milton Keynes
Language: eng
Subjects: Intelligence service -- Great Britain -- History.; Electronic surveillance -- Great Britain.
Notes: Includes bibliographical references and index.