1.
[Heidelberg, Germany] : [Springer], 1973.
English | 34 DE |
2.
[Place of publication not identified] : [publisher not identified], 1971.
German | 29 DE |
3.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1977.
German | 28 DE |
4.
5.
Paris [France] : Institut National de la Propriété Industriell, 1996.
French | 31 FR |
6.
7.
8.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1996.
German | 29 DE |
9.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1977.
German | 29 DE |
10.