1.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1984.
German | 28 DE |
2.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1991.
German | G 41 DE 28 |
3.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1984.
German | 28 DE |