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WIPO Knowledge Repository 1 records found Search took 0.15 seconds. 
\( \def\WIPO{World Intellectual Property Organisation} \)
1.
Basel : Helbing & Lichtenhahn, 1983-
Third edition.
German | 346.494048|F 13 TRO.IM 1983-85 | F 13 TRO.IM 1983-85 |

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