biological purification
| method
| biological purification | |
| environ. | épuration biologique |
| method | |
| automat. | moyen |
| chem. | technique; action; processus; phénomène; têtes |
| commun. | méthode |
| environ. | méthode |
| mater.sc. el. | procédé |
| |||
| épuration biologique | |||
|
biological purification : 9 phrases in 2 subjects |
| Environment | 6 |
| Natural resourses and wildlife conservation | 3 |