Janice Van Cleaves 2011 fantastische, magische, bizarre & unglaubliche Experimente von Ja
22,67 €
By Janice VanCleave. Why is Venus so hot?. What makes a sound loud or soft?. You'll look through a drop of water to find out how a magnifying lens works. Using a Styrofoam ball, a pencil, and a lamp, you'll learn why the Moon appears and disappears.
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