Navigation in the jet age / Robert Wells ; Foreword by Curtis E. LeMay. Illustrated by Jack Coggins. Wells, Robert. 1913- LeMay, E. Coggins, Jack. Avionics Juvenile literature. Navigation (Aeronautics) Juvenile literature. TL695 .W4 629.13251 WEN New York : Dodd, Mead , c1961. c1961. 1961 Text vi , 117 p. : eng