Title: Military and security
Description: "Provides a historical overview of military technology, from the earliest weapons to medieval fortresses and to today's modern weapons and warfare strategies. Includes the progression of lock technology from skeleton keys to today's retinal scans"--Provided by publisher.
Subjects: Aeronautics, Military art and science, Exploration, Outer space, Technological innovations, Juvenile literature, History, Exploration of outer space, Military art and science, juvenile literature, Military art and science, history