Ages 14-16
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Exploring the History of MedicineSpecial Price $13.59 List Price $16.99
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The Stargazer's Guide to the Night SkySpecial Price $31.99 List Price $39.99
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Exploring the World of MathematicsSpecial Price $13.59 List Price $16.99
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Demolishing Contradictions: Volume 1Special Price $10.39 List Price $12.99