1.
|
Genebra : OMPI, 1993.
Spanish | N 21 CON 1993 |
|
2.
|
New York City : Clark Boardman Callaghan, 1975.
English | US 87 1975 |
|
3.
|
Genebra : OMPI, 1992.
Spanish | N 21 CON 1992 |
|
4.
|
Genf : World Intellectual Property Organization, 1976.
German | E 224:329 |
|
5.
|
Lima : Editorial Arica, 1974.
Spanish | N 13 PIZ.B |
|