1.
2.
3.
4.
5.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1988.
English | 6B OMPI |
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London [England] : Informa Law, 1988.
English | 57 GB |
8.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1988.
French | 28 DE |
9.