TECHNOLOGY
Walker, Kate , Walker, Kate , Argaet, Elaine ,

Spies and Their Gadgets

(4) 4-6 Spies and Spying series. Secret codes, unmanned aircraft, and satellites are some of the devices introduced in this book, which is illustrated with stock photos. Though the presentation is superficial, the text cites intriguing historical cases and discusses fascinating modern trends, such as using the Internet and DNA codes to transmit information. The sidebars define the same terms that are included in the glossary. Ind.

RELATED 

Get connected. Join our global community of more than 200,000 librarians and educators.

This coverage is free for all visitors. Your support makes this possible.

We are currently offering this content for free. Sign up now to activate your personal profile, where you can save articles for future viewing.

ALREADY A SUBSCRIBER?