Title: Spies and their gadgets
Subtitle: by Kate Walker & Elaine Argaet.
First published: 2003
Description: 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.
Subjects: Equipment and supplies, Juvenile literature, Espionage
LC classification: UB270.5 .W34 2003