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| municipal effluents | |||
| urban wastewater The liquid wastes deriving from domestic, commercial and industrial activities of an urban settlement; urban waste water; urban wastewater; municipal waste water | |||
| municipal wastewater | |||
| aguas residuales urbanas: 8 phrases in 3 subjects |
| Environment | 6 |
| General | 1 |
| Politics | 1 |