ISBN-13: 9780714651767 / Angielski / Twarda / 2001 / 350 str.
ISBN-13: 9780714651767 / Angielski / Twarda / 2001 / 350 str.
In recent years the importance of Signals Intelligence (Sigint) has become more prominent, especially the capabilities and possibilities of reading and deciphering diplomatic, military and commercial communications of other nations.