J. P. Devapriya, “Influence of Sulfate, Phosphate, Ammonia and Dissolved Oxygen on Biochemical Oxygen Demand of Marlimund Lake, Ooty, The Nilgiris: Influence of Sulfate, Phosphate, Ammonia and Dissolved Oxygen on Biochemical Oxygen Demand of Marlimund Lake, Ooty, The Nilgiris”, ijpba, vol. 9, no. 03, Sep. 2018.