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Introduction to: Hot Air Balloon Travel. What is a Balloon? Balloon… ◦ A spherical craft made of silk, rubber, or other suitable nonporous materials that. - ppt download
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Forks, Phonographs, and Hot Air Balloons: A Field Guide to Inventive Thinking: Weber, Robert J.: 9780195064025: Amazon.com: Books
How Does The Kinetic Molecular Theory Related To Hot Air Balloons?
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How do hot-air balloons work? - Explain that Stuff
