Study guide for An invitation to fly : basics for the private pilot, fourth edition /
Semb, George B.
Taylor, Donald.
Glaeser, Dennis.Invitation to fly.4th ed.
Gum, Sanford.Invitation to fly.4th ed.
Walters, Bruce,(Bruce E.)Invitation to fly.4th ed.
Belmont, Calif. : Wadsworth Pub. Co.,
c1993.