11 May 1973
| Title | Language | Date |
|---|---|---|
| Circulaire Circ. 969 dd 11.05.1973 | Dutch | 11-05-1973 |
| Vraag nr. 51 van de heer Lagae dd. 11.05.1973 | Dutch | 11-05-1973 |
| Circulaire Ci.R.Lux/264.471 dd. 11.05.1973 (deel 1) | Dutch | 11-05-1973 |
| Vraag nr. 50 van de heer Van In dd. 11.05.1973 | Dutch | 11-05-1973 |
| Circulaire Ci.R.9.Lux/264.471 dd. 11.05.1973 (deel 2) | Dutch | 11-05-1973 |
| Circulaire Circ.969 dd. 11.05.1973 | French | 11-05-1973 |
| Circulaire Ci.R.9.Lux 264.471 dd. 11.05.1973 | French | 11-05-1973 |
| Question n° 51 de M. Lagae dd. 11.05.1973 | French | 11-05-1973 |
| Question n° 50 de M. Van In dd. 11.05.1973 | French | 11-05-1973 |
