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2490-1976, . (1986). TOLERANCE LIMITS FOR INDUSTRIALS EFFLUENTS DISCHARGED INTO INLAND SURFACE WATERS PART- VII COKE OVENS. DELHI: ISI.
2490-1976, . 1986. TOLERANCE LIMITS FOR INDUSTRIALS EFFLUENTS DISCHARGED INTO INLAND SURFACE WATERS PART- VII COKE OVENS. DELHI: ISI.
2490-1976, . TOLERANCE LIMITS FOR INDUSTRIALS EFFLUENTS DISCHARGED INTO INLAND SURFACE WATERS PART- VII COKE OVENS. DELHI: ISI. 1986.