Air Traffic ControllerBook - 2011
Thousands of airplanes travel through the sky every day. There are no roads to guide them along their paths. Instead, pilots must rely on the instructions of air traffic controllers. Look inside to find out what these important workers do and how they do it.
Publisher: Ann Arbor, MI : Cherry Lake Pub., c2011
Characteristics: 32 p. : col. ill. ; 25 cm