1.
2.
3.
Anvers : Bockstael, 1952.
Dutch | K 13 BOC.M |
4.
New York, New York : International Trademark Association, 1985.
English | 64 US |
5.
6.
7.
8.
Bern : Stämpfli & Cie, 1984.
German | K 13 MAR.D |
9.
Bern [Switzerland] : [Office Federal De La Propriete Intellectuell], [1991]
German | K 13 BUN.H |
10.
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1987.
English | 10B OMPI |