1.
[Place of publication not identified] : [publisher not identified], 1992.
English | K 710 LICCD 1 |
2.
3.
4.
5.
6.
7.
8.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1968.
English | N 612 OMPI 6B |
9.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1973.
English | 6B OMPI |
10.
[Paris, France] : [UNESCO], 1973.
French | 6A OMPI |