"It's time for bed, and you plop down on your pillow. But would you plop down on your pillow if it was made from glass? Glass is all around you. It's used to make the windows in your house to decorations on your shelves. Find out about different types of glass, how glass is made, and decide if it's really possible to make a pillow from it"--
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Hinweis: Dieser Artikel kann nur an eine deutsche Lieferadresse ausgeliefert werden.