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Beschreibung

Is a wheel the same as a gear? Will a square wheel work? Could a wheel roll forever? Discover the wonder and science of wheels in Gears Go, Wheels Roll.

Dauer: 4 Minuten (00:04:04)
Veröffentlichungsdatum: 01.03.2013; Unabridged; Copyright Year: — Copyright Statment: —

• Jugendliteratur