1.
[Hong Kong, China] : [China Patents & Trademarks Publications], 1987.
English | 7 CN |
2.
3.
4.
Geneva [Switzerland] : International Bureau for the Protection of Industrial Property, 1984.
English | 10B OMPI |
5.
6.
[Paris, France] : [UNESCO], 1956.
French | 6A OMPI |
7.
[Paris, France] : [UNESCO], 1904.
English | 6A OMPI |
8.
Buffalo, New York : The Patent and Trademark Office Society, 1990.
English | 47 US |