1.
Müchen [Germany] : Verlag Dokumentation, 1983.
German | 5 DE |
2.
3.
Darmstadt : Wissenschaftliche Buchgesellschaft, 1985.
German | N 632 HAB.E |
4.
Müchen [Germany] : Verlag Dokumentation, 1983.
German | 5 DE |
5.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1986.
German | 28 DE |
6.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1982.
German | 28 DE |