1.
|
Köln : C. Heymann, c1991.
German | K 31 STU.I |
|
2.
|
Stockholm [Sweden] : Nordiskt Immateriellt Rättsskydd (NIR), 1979.
Swiss german | 3 SE |
|
3.
|
East Kilbride [Scotland] : Licensing Executives Society International, 1991.
English | 48 US |
|
4.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1991.
German | 28 DE |
|