 |
| |||
| prévention de la pollution | |||
| prevention of pollution: 89 phrases in 11 subjects |
| Environment | 21 |
| Fish farming pisciculture | 1 |
| General | 20 |
| Health care | 1 |
| Law | 4 |
| Name of organization | 6 |
| Natural resourses and wildlife conservation | 2 |
| Nuclear physics | 2 |
| Obsolete / dated | 1 |
| Transport | 24 |
| United Nations | 7 |