|
1.
|
[Heidelberg, Germany] : [Springer], 1971.
English | 34 DE |
|
|
2.
|
New York : Nations Unies, 1973.
French | F 49 TOO.P |
|
|
3.
|
Nueva York : Naciones Unidas, 1973.
Spanish | F 49 TOO.P(E) |
|
|
4.
|
Cologne [Germany] : German Association for the Protection of Intellectual Property (GRUR), 1971.
German | 29 DE |
|
|
5.
|
New York : United Nations, 1972.
English | F 49 TOO.R |
|