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National Geographic Kids
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What Makes Day and Night
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Crop Rotation and Cover...
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The Reason for the Seasons
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The Giza Prophecy: The Orion...
Scott Creighton
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Day and Night
Crystal Sikkens
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Next Time You See a Sunset
Emily Morgan
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Sun Up, Sun Down: The Story...
Jacqui Bailey
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Day and Night
Robin Nelson
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Rotations, Quaternions, and...
Simon L Altmann
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Day and Night
Margaret Hall,
Jo Miller (Illustrator)
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How Long Is a Day?
Claire Clark
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Curious Pearl Identifies the...
Eric Braun,
Stephanie Dehennin (Illustrator)
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Pole Shift: Predictions and...
John White
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How Long Is a Year?
Claire Clark
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The Earth's Variable Rotation...
Kurt Lambeck
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Spectroscopy of Molecular...
Burshtein,
Temkin
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Time: From Earth Rotation to...
Dennis D. McCarthy,
P. Kenneth Seidelmann
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Crop Rotation on Organic...
Natural Resource
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Why is It Dark?
Chris Arvetis
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Home-Grown Energy from Short...
George MacPherson
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Theory of Rotating Stars
Jean Louis Tassoul
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