"Several different modes of transportation, such as trains, planes, and cars, need motors and gears to properly run. Motors and gears also power many other machines. Throughout this . . . text . . . readers are exposed to various devices that utilize motors and gears and are given a stronger sense of how these parts work"--Provided by publisher.
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Details
ISBN: 1534529276
ISBN: 1534529292
ISBN: 9781534529632
ISBN: 9781534529274
ISBN: 9781534529298
Physical Description:24 p. : col. ill. ; 23 cm.print