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1.
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München : C.H. Beck, 1990.
German | N 725 LEW.U |
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2.
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The Hague : Kluwer Law International, c2000.
English | N 711 MAK.C |
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3.
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[Place of publication not identified] : [publisher not identified], 1993.
English | 6 US |
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4.
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[Paris, France] : [UNESCO], 1912.
French | 6A OMPI |
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5.
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[Place of publication not identified] : [publisher not identified], 1990.
English | 47 US |
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6.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1989.
German | 28 DE |
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7.
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[Paris, France] : [UNESCO], 1921.
French | 6A OMPI |
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