1.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1987.
German | 29 DE |
2.
3.
[Place of publication not identified] : [publisher not identified], 1945.
Dutch | G 95 ZAN.B |
4.
Courbevoie [France] : Institut National de la Propriété Industrielle, 1946.
French | 10A OMPI |
5.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1979.
German | 28 DE |