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Magic in a Drop of Water: How Ruth Patrick Taught the World about Water PollutionRetail: $19.99You Pay: $7.75You Save 61% -
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Why We Went Extinct: An Illustrated Encyclopedia of the Species That Just Didn't Make ItRetail: $15.99You Pay: $5.50You Save 66% -
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Indigenous Ingenuity: A Celebration of Traditional North American KnowledgeRetail: $9.99You Pay: $4.75You Save 52%