1.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1969.
English | 6B OMPI |
2.
3.
4.
5.
6.
[Paris, France] : [UNESCO], 1987.
French | 6A OMPI |
7.
Roma [Italy] : Biblioteca Nazionale Centrale di Roma, 1979.
Italian | 13 IT |
8.
9.
10.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1972.
Danish | 6B OMPI |