1.
[Place of publication not identified] : [publisher not identified], 1989.
French | 53 FR |
2.
Courbevoie [France] : Institut National de la Propriété Industrielle, 1988.
French | 10A OMPI |
3.
4.
Geneva, Switzerland : World Intellectual Property Organization, 1989.
English | 16 OMPI |
5.
6.