1. Body of secrets : how America's NSA and Britain's GCHQ eavesdrop on the world /: how America's NSA and Britain's GCHQ eavesdrop on the world. (2002) Other Names: Bamford, James Record Type: Book Extent: 1 online resource (721 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Colossus : Bletchley Park's greatest secret /: Bletchley Park's greatest secret. (2014) Other Names: Gannon, Paul Record Type: Book Extent: 1 online resource (806 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗