|
1.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1978.
German | 28 DE |
|
|
2.
|
Weinheim : Vch, 1987.
Second edition.
German | G 24 HIR.C |
|
|
3.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1984.
German | 28 DE |
|
|
4.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1989.
German | 28 DE |
|