$0.01  | Planes, Gliders, Helicopters, and Other Flying Machines (How Things Work) By Kingfisher Cheap Price for Planes, Gliders, Helicopters, and Other Flying Machines (How Things Work). With Special Pomotions |
Planes, Gliders, Helicopters, and Other Flying Machines (How Things Work) Description
Focusing on flying machines, this is one of a series which takes a practical look at science and technology. How and why each type of machine works is explained, and many of the illustrations are cut away to show what the machines are like inside. Simple experiments and activities are included.
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