Collection: Age 13
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How Everything Works : From Brain Cells to Black Holes
![How Everything Works : From Brain Cells to Black Holes]()
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- $34.99
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What If? 2 : Additional Serious Scientific Answers to Absurd Hypothetical Questions
![What If? 2 : Additional Serious Scientific Answers to Absurd Hypothetical Questions]()
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- $30.00
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- $30.00
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