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light catchers

Max Boyle was hoping for a quiet life after the rough-and-tumble of World War II

and how form and function interacted

Easy-to-follow instructions for fashioning decorative knots

and Quetzalcoatl

Ingenious Mathematical Problems and Methods light catchersFor two decades, an international readership of workers in applied mathematics submitted their favorite puzzles to a mid twentieth century column, The Graham Dial. This original collection features 100 of the publication's very best problems, with themes ranging from logic and engineering situations to number theory and geometry. Each problem was specifically selected for its widely differing modes of solution, and most include several methods of

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