Puzzles for Pleasure By Barry R. Clarke

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Brain Busters! Mind-Stretching Puzzles in- 0486427552, paperback, Barry R Clarke

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Brain Busters! Mind-Stretching Puzzles in Math and Logic by Clarke, Barry R.

Puzzles for Pleasure by Barry R. Clarke (English) Paperback Book

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Brain Busters! Mind-Stretching Puzz..., Barry R. Clarke