 |
| |||
| municipal waste water; urban waste water | |||
| municipal wastewater | |||
| |||
| urban wastewater The liquid wastes deriving from domestic, commercial and industrial activities of an urban settlement; urban wastewater | |||
| eaux usées urbaines: 3 phrases in 3 subjects |
| Environment | 1 |
| Nuclear physics | 1 |
| United Nations | 1 |