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One of Us |
Does anyone know if the lead foil back of a dental X-Ray film is pure lead, or something else? THanks in advance wk | ||
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one of us |
I would say so. Jim "Whensoever the General Government assumes undelegated powers, its acts are unauthoritative, void, and of no force." --Thomas Jefferson | |||
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one of us |
not pure but close enough to call it that | |||
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