How do hot-air balloons float? What is air made of? How is water power used? How does pollution affect our air and water supply? This book answers these questions and many more.
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Anbieter: World of Books (was SecondSale), Montgomery, IL, USA
Zustand: Good. Item in good condition and has highlighting/writing on text. Used texts may not contain supplemental items such as CDs, info-trac etc. Artikel-Nr. 00107589922
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