1.
Luxembourg : Office for Official Publications of the European Communities, c1991.
17th edition.
English | C 410 EC.D |
2.
3.
4.
5.
6.
7.
Courbevoie [France] : Institut National de la Propriété Industrielle, 1991.
Italian | 10A OMPI |
8.
9.
[Place of publication not identified] : [publisher not identified], 1992.
French | N 631 SOF |
10.
New York, New York : The Copyright Society of the USA, 1992.
English | 14 US |