1.
|
New York, New York : The Copyright Society of the USA, 1988.
English | 14 US |
|
2.
|
Berlin Et Al : Vahlen, 1968.
English | N 34 SCH.T |
|
3.
|
[Geneva, Switzerland] : [World Intellectual Property Organization], 1968.
English | 6B OMPI |
|
4.
|
[Paris, France] : [UNESCO], 1968.
French | 6A OMPI |
|