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Lessons from literature : Drill a narrow hole in an old log, place a piece of shiny metal at the bottom, and insert a series of nails facing downward. The space between the nails should be just en...
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Lessons from literature : Drill a narrow hole in an old log, place a piece of shiny metal at the bottom, and insert a series of nails facing downward. The space between the nails should be just en...