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1.
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Geneva : International Telecommunication Union, 1999.
English | D 80 ITU.C |
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2.
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Hoboken, New Jersey : John Wiley & Sons, Inc., 1999.
English | 51 CH |
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3.
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New York, New York : International Trademark Association, 1999.
English | 64 US |
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4.
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London [England] : Informa Law, 1997.
English | 52 GB |
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