Spies and their gadgets

Presents a brief overview of a number of methods and gadgets used by spies, from the earliest uses of codes and ciphers to high-tech methods made possible by computers.

Smart Apple Media
2004
9781583403419
book

Holdings

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29769036446045213763488109053PCE301PCC0070441327.12 Wal327.1216377825731695044385