1.
Hoboken, New Jersey : John Wiley & Sons, Inc., 2009.
English | Multiple e-resources available| Available Online | 51 CH |
2.
[Place of publication not identified] : [publisher not identified], 1996.
English | N 631 GER.P |
3.
4.
[Place of publication not identified] : [publisher not identified], 1977?.
Spanish | N 40 EME.R |
5.
6.
7.
[Geneva, Switzerland] : [World Intellectual Property Organization], 1985.
English | 6B OMPI |
8.
9.
10.