1.
|
[Place of publication not identified] : [publisher not identified], 1989.
English | 85 US |
|
2.
|
Athens : University of Georgia Press, c1991.
English | N 141 PAT.N |
|
3.
|
Courbevoie [France] : Institut National de la Propriété Industrielle, 1986.
French | 10A OMPI |
|
4.
|
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1986.
English | 10B OMPI |
|