Just to make certain these limitations are real, try contacting Gerard Henrotin, another gun book author. Although I'm sure someone could eventually hack his system of protection, it seems fairly secure in its ability to keep his work safe from unauthorized copying. The work is not on disk, rather passworded downloads, and the code for its pages has disabled "copy" function. He's a member of both Luger forums, and has many e-books available about all sorts of other firearms as well.
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