Browsing by Author "De Silva, M.P."
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Item Organochlorine pesticide residues in different grades of Sri Lanka tea(1991) De Silva, M.P.; Thiemann, W.Item Organophosphorous and volatile organochlorine compounds in the waters of the Nilwala river of southern Sri lanka(1991) De Silva, M.P.; Hick, K.; Thiemann, W.