1.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1992.
German | F 6351(13) DE 29 |
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2.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1992.
German | T 91 DE 28 |
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3.
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[Place of publication not identified] : [publisher not identified], 1992.
German | M 234(13) DE 29 |
|
4.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1972.
German | 29 DE |
|