Machines And Inventions 

 - Authorized English language ed. (Asia) 
 - Hong Kong ;  Time Life Books :  1994. 
 - 150 P. :  colour illustrations :  31 cm ,  hardcover ,  large. 
 - Time-Life's illustrated world of science .
<br/><br/> This visually rich educational volume explores the history and function of machines and technology through clear Q&A-style explanations and full-color illustrations. Topics include: Invention and evolution of tools and machines Mechanical principles behind gears, levers, pulleys, engines, and robotics Everyday innovations like household appliances, transportation technology, communication devices, and industrial machinery Designed for young readers (ages 9–14) with engaging visuals and straightforward text. 
<br/><br/><label>ISBN: </label>9780783529622 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventions
<br/><br/><label>Dewey Class. No.: </label>R 500  / TIM-M