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1.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1979.
German | 28 DE |
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2.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1974.
German | 28 DE |
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3.
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[Place of publication not identified] : [publisher not identified], 1957.
Second edition.
German | M 340 TET.G |
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4.
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Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1978.
German | 28 DE |
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5.
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Munich Et Al : Beck'sche, 1967.
Second edition.
German | T 80 TET.K |
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6.
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München [Germany] : Mitteilungen der deutschen Patentanwèalte, 1976.
German | 43 DE |
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