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Paris : Libr. techniques, 1988.
French | N 631 PRO 1988 |
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2.
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Geneva, Switzerland : World Intellectual Property Organization, 1990.
English | E 23F21 WIPO.I |
Available |
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The Hague : Kluwer Law International, c2003. Vol. 8 of the Series.
English | G 252 HEA.I |
Available |
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