11 February 1971
| Title | Language | Date |
|---|---|---|
| Vraag nr. 78 van de heer De Croo dd. 11.02.1971 | Dutch | 11-02-1971 |
| Circulaire Ci.R.9 Dk/256.350 dd. 11.02.1971 | Dutch | 11-02-1971 |
| Question n° 78 de M. De Croo dd. 11.02.1971 | French | 11-02-1971 |
| Circulaire Ci.R.9 Dk/256.350 dd. 11.02.1971 | French | 11-02-1971 |
