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![The Adventures of Ruby Pi and the Math Girls: Teen Heroines in History Use Geometry, Algebra, and Other Mathematics to Solve Colossal Problems [Paperback]](/itemImage/2/9/2/6/2_7430527.jpg "The Adventures of Ruby Pi and the Math Girls: Teen Heroines in History Use Geometry, Algebra, and Other Mathematics to Solve Colossal Problems [Paperback]")