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1.
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Gelsenkirchen : Mannhold, 1982.
German | K 338 HOEH.Z |
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2.
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[Santiago de Compostela] : Universidad de Santiago de Compostela, Instituto de Derecho Industrial, c1985.
Portuguese | K 338 ARE.C |
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3.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1976.
German | 28 DE |
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4.
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[Place of publication not identified] : [publisher not identified], 1988.
English | 1 HK |
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