1.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1999.
German | 29 DE |
|
2.
|
[Place of publication not identified] : [publisher not identified], 1991.
German | N 3311N6318 DE 29 |
|
3.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1993.
German | 28 DE |
|
4.
|
Müchen [Germany] : Verlag Dokumentation, 1992.
German | N 16(145) DE 5 |
|