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How to protect banknotes using moiré fringes Suggestion of a systematic approach P. Koeze July 1975 Digitised April 2007
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Document Date: 2007-04-18 13:52:40
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File Size: 412,61 KB
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How to protect banknotes using moiré fringes Suggestion of a systematic approach P. Koeze July 1975 Digitised April 2007