14 April 1961
| Title | Language | Date |
|---|---|---|
| Nummer R 161-1°/04-01 | Dutch | 14-04-1961 |
| Nummer R 161-2°/07-01 | Dutch | 14-04-1961 |
| Nummer R 161-2°/07-01 | Dutch | 14-04-1961 |
| Numéro E 162-7°/04-01 | French | 14-04-1961 |
| Numéro E 161-1°/04-01 | French | 14-04-1961 |
| Numéro E 162-7°/04-01 | French | 14-04-1961 |
