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2490-1974, . (1977). TOLERANCE LIMITS FOR INDUSTRIAL EFFLUENTS DISCHARGED INTO INLAND SURFACE WATERS PART- V. DELHI: ISI.
2490-1974, . 1977. TOLERANCE LIMITS FOR INDUSTRIAL EFFLUENTS DISCHARGED INTO INLAND SURFACE WATERS PART- V. DELHI: ISI.
2490-1974, . TOLERANCE LIMITS FOR INDUSTRIAL EFFLUENTS DISCHARGED INTO INLAND SURFACE WATERS PART- V. DELHI: ISI. 1977.