Spy Surveillance - Elsie Olson - Bog

How do spies use surveillance to gain intelligence about their targets? In this title, readers will learn about how spies used surveillance techniques in the past like bugs, wires, cameras, and opening and reading mail. They will also learn about modern surveillance like drones, spy planes, and satellites. Aligned to Common Core Standards and correlated to state standards. Abdo & Daughters is an imprint of Abdo Publishing, a division of ABDO.