1.
2.
3.
4.
[Paris, France] : [UNESCO], 1969.
French | 6B OMPI |
5.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1969.
English | 6B OMPI |
6.
7.
8.
9.
Roma [Italy] : Biblioteca Nazionale Centrale di Roma, 1979.
Italian | 13 IT |
10.
Courbevoie [France] : Institut National de la Propriété Industrielle, 1953.
French | 10A OMPI |