1.
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1969.
English | 10B OMPI |
2.
3.
4.
London [England] : Trade Marks, Patents and Designs Federation, 1984.
French | 41 GB |
5.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1973.
German | 28 DE |