1.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1973.
German | 29 DE |
|
2.
|
[Geneva, Switzerland] : [World Intellectual Property Organization], 1971.
German | 29 DE |
|
3.
|
Köln : Heymann, c1986.
German | S 320 MAS.S |
|
4.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1971.
German | 29 DE |
|
5.
|
[Heidelberg, Germany] : [Springer], 1970.
English | 34 DE |
|