1.
|
[Place of publication not identified] : [publisher not identified], 1966.
French | 6A OMPI |
|
2.
|
[Geneva, Switzerland] : [World Intellectual Property Organization], 1966.
English | 6B OMPI |
|
3.
|
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1969.
English | 10B OMPI |
|
4.
|
Courbevoie [France] : Institut National de la Propriété Industrielle, 1969.
French | 10A OMPI |
|