1.
|
[Geneva, Switzerland] : World Intellectual Property Organization, 1992.
English | E 23191G22 WIPO.W |
|
2.
|
Geneva, Switzerland : Springer International Publishing AG, 2022.
|
3.
|
[Place of publication not identified] : [publisher not identified], 1991.
English | G 25 CH 37 |
|
4.
|
Buffalo, New York : The Patent and Trademark Office Society, 1992.
English | 47 US |
|