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Up, Down, and Around: The Force of Gravity
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Amazon.com Product Description (ISBN 0385098650, Hardcover)Explains the effects of gravity on human beings, satellites, the sun, moon, and planets.
(retrieved from Amazon Thu, 12 Mar 2015 18:20:45 -0400)
Looks at the discovery of the polio vaccine which eventually eradicated the polio disease.
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