1.
|
Geneva [Switzerland] : World Intellectual Property Organization, 1995.
English | E 5 WIPO.C |
|
2.
|
Geneva : World Intellectual Property Organization, 1995.
English | E 5 WIPO.CO |
|
3.
|
[Place of publication not identified] : [publisher not identified], 1994.
English | F 630 ASA.O |
|
4.
|
Basel : Helbing & Lichtenhahn, c2000.
English | B 344 BER.I |
|