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Magnetized books

Discussion in 'Electrical Engineering' started by Ken, Oct 11, 2004.

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  1. Ken

    Ken Guest

    Hello,

    Anyone know how my local library can magnetize and demagnetize their books.
    The only thing I have seen different on those books is a small piece of
    paper with a bar code on it. They just pass that on the counter and the
    book it demagnetize, humm

    thanks

    ken
     
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