How Planes, Gliders, Helicopters and Other Flying Machines Work (How Things Work S.)

by TerryJennings (Author)

• Used

  Paperback
  1994

  $3.25

• Used

  Paperback
  1993

  $13.85

  Children will learn how hot air helps balloons to fly...why the shape of a wing is important to flight...and how hang gliders glide and helicopters hover.