Number-Crunching Math Puzzles by Hess, Dick - paperback - Good

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Number-Crunching Math Puzzles By Dick Hess

Number-Crunching Math Puzzles by Dick Hess

Number-Crunching Math Puzzles - Paperback By Hess, Dick - VERY GOOD

Number-Crunching Math Puzzles, Hess, Dick

The Last Recreations Martin Gardner HC 1997 Math Puzzles Logic

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