How Cranes, Dumptrucks, Bulldozers and Other Building Machines Work (How Things Work)
By Terry Jennings.
Description
Focusing on building 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. - from Amzon
ISBN(s)
0862729807, 9780862729806
