| |||
dépollution de l'eau | |||
purification d'eau; épuration d'eau | |||
épuration de l'eau | |||
purification de l'eau | |||
| |||
épuration de l'eau |
water purification: 25 phrases in 8 subjects |
Chemistry | 1 |
Construction | 5 |
Environment | 10 |
General | 4 |
Life sciences | 1 |
Natural resourses and wildlife conservation | 2 |
Patents | 1 |
United Nations | 1 |