Product Description This book is an explanatory guide to tools and machines that can be enjoyed by children and adults alike. It explains various mechanisms such as airplanes, levers, gears, hydraulic machines, and electrical circuits with humorous illustrations. A mammoth character appears, making it a fun book to learn the principles of machines. Product Details • Author: David Macaulay • Publisher: Iwanami Shoten • Condition: Almost unused and close to new, but the cover is missing due to long-term storage. There are no tears or stains, and it is in very good condition. Notes • Please note that the cover is not included. • Returns and refunds are not accepted after purchase. #Machines #Mechanisms #Science #ForChildren #IllustratedExplanation #DavidMacaulay #IwanamiShoten