ISBN-13: 9780007312665 / Angielski / Miękka / 2011 / 448 str.
GCHQ (Government Communication Headquarters) is the successor to the famous Bletchley Park wartime code-breaking organisation and is the largest and most secretive intelligence organisation in the country. Richard Aldrich traces GCHQ's evolvement from a wartime code-breaking operation to one of the world's leading espionage organisations.