| LC control no. | sh 85145478 |
|---|---|
| LC classification | TD430 TD477 |
| Topical heading | Water--Purification |
| Variant(s) | Effluent treatment Purification of water Water purification Water treatment |
| See also | Sanitation Water quality management Water-supply |
| Found in | UMI business vocab. (Effluent treatment, use Water treatment) |
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