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- [3] OPERATION OF SEWAGE TREATMENT PLANTS JOURNAL WATER POLLUTION CONTROL FEDERATION, 1961, 33 (04): : 419 - 442
- [6] OPERATION OF SEWAGE TREATMENT PLANTS JOURNAL WATER POLLUTION CONTROL FEDERATION, 1961, 33 (02): : 202 - 211
- [9] OPERATION OF SEWAGE TREATMENT PLANTS JOURNAL WATER POLLUTION CONTROL FEDERATION, 1961, 33 (03): : 273 - 287