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Seymour Simon
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The Heart: Our Circulatory System (Smithsonian)
by Simon, Seymour
Paperback
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Exoplanets
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Weather (Smithsonian)
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The Sun (Updated Edition)
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Frogs
Muscles (Our Muscular System)
Earthquakes (Smithsonian)
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Volcanoes (Smithsonian)
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The Sun
Lightning (Smithsonian)
Climate Action: What Happened and What We Can Do
Hardcover
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Dinosaurs: Fact and Fable
