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Assessment of Water Quality Using Principal Component Analysis : A Case Study of the Açude da Macela , Sergipe , Brazil

S. L. Costa, C. A. Garcia, J. Alves, 2017 .

Long-term variations of TN and TP in four lakes fed by Yangtze River at various timescales

B. Xi, Jian Huang, Hongliang Liu, 2015, Environmental Earth Sciences.