1.
Geneva [Switzerland] : World Intellectual Property Organization, 1987-
English | E 23180G176 WIPO.PCIPI (F/E) |
2.
Geneva [Switzerland] : World Intellectual Property Organization, 1988-
English | E 23180G176 OMPI.PCIPI/GI(F/E) |
3.
Geneva [Switzerland] : World Intellectual Property Organization, 1982-
English | E 23180G176 WIPO.PCPI/RG(F/E) |