1.
|
Köln : Heymann, c1988.
German | N 631 GEI.A |
|
2.
|
[Place of publication not identified] : [publisher not identified], 1988.
German | N 631 GEI.G |
|
3.
|
[Place of publication not identified] : [publisher not identified], 1973.
German | 29 DE |
|
4.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1973.
German | 28 DE |
|
5.
|
[Heidelberg, Germany] : [Springer], 1986.
French | 34 DE |
|
6.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1971.
German | 29 DE |
|
7.
|
Köln : C. Heymann, c1989.
German | F 67 PAG.L |
|
8.
|
Köln : C. Heymann, c1997. Fourth edition.
German | F 67 PAG.L |
|