1629849
9781583403419
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.Kate Walker is the author of 'Spies and Their Gadgets: By Kate Walker & Elaine Argaet (Spies & Spying)' with ISBN 9781583403419 and ISBN 1583403418.
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