1.
Courbevoie [France] : Institut National de la Propriété Industrielle, 1971.
French | 10A OMPI |
2.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1972.
German | 29 DE |
3.
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1971.
English | 10B OMPI |