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Why Do Balls Bounce? (TIME-LIFE LIBRARY OF FIRST QUESTIONS AND ANSWERS) - Hardcover

 
9780783509013: Why Do Balls Bounce? (TIME-LIFE LIBRARY OF FIRST QUESTIONS AND ANSWERS)

Inhaltsangabe

Answers questions about how household appliances and other familiar devices work, including "Why does toast pop up?" "Why do pens write?" and "How does a radio make music?"

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