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Berlin Et Al : Vahlen, 1958.
German | P 21 SCH.L |
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[Geneva, Switzerland] : [World Intellectual Property Organization], 1976.
English | 6B OMPI |
7.
New York, New York : The Copyright Society of the USA, 1983.
English | 14 US |
8.
[Paris, France] : [Association frandcaise pour la diffusion du droit d'auteur national et international], 1980.
French | 53 FR |
9.
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1981.
German | 29 DE |
10.