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1.
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Baden-Baden [Germany] : Nomos Verlagsgesellschaft, 1979.
German | G 941 SIN.N |
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2.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1993.
German | 29 DE |
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3.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1992.
German | 29 DE |
|