1.
|
Müchen [Germany] : Verlag Dokumentation, 1985.
English | 5 DE |
|
2.
|
[Heidelberg, Germany] : [Springer], 1988.
English | 34 DE |
|
3.
|
[Place of publication not identified] : [publisher not identified], 1969.
English | 2 AU |
|
4.
|
[Geneva, Switzerland] : [World Intellectual Property Organization], 1985.
English | 6B OMPI |
|