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1.
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Bruxelles : Maison Larcier, 1995.
French | N 40 BER.N |
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2.
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Geneva : World Intellectual Property Organization, 1992.
English | E 231G252 WIPO.G |
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3.
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[Place of publication not identified] : [publisher not identified], 1992.
French | N 635 GEN.P |
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4.
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New York : Nimmer & Geller, 1988.
Swiss german | N 44 DES.S |
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5.
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[Place of publication not identified] : Lausanne, 1991.
French | N 621 DES.D |
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6.
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[Paris, France] : [UNESCO], 1992.
English | 637511 N |
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