23 April 1971
| Title | Language | Date |
|---|---|---|
| No title | Dutch | 23-04-1971 |
| Nummer R 199/17-02 | Dutch | 23-04-1971 |
| Nummer R 199/14-05 | Dutch | 23-04-1971 |
| Nummer R 199/14-05 | Dutch | 23-04-1971 |
| Nummer R 196/01-02 | Dutch | 23-04-1971 |
| Numéro E 196/01-02 | French | 23-04-1971 |
| Numéro E 199/17-02 | French | 23-04-1971 |
| No title | French | 23-04-1971 |
