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This research work was conducted to assess the concentrations of Cu and Zn in the water, sediments and in the freshwater carnivorous fish, Channa gachua, of River Swat and River Barandu in Malakand Division, Pakistan. Samples were collected at selected sites on the two rivers and analyzed for these metals by atomic absorption spectrophotometer. The mean concentrations of Cu and Zn in fish muscles...
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