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Item Dyeability of textile fibres with azo compounds prepared by coupling red onion skin extract with diazonium salts(NARESA:Colombo, 1997) Akaranta, O.; Efanga, D.E.Item Removal of blue colouration from industrial effluents by burrnt-brick particles(National Science Foundation:Colombo, 2000) Priyantha, N.; Keerthiratna, S.; Lokuge, I; Gajanayake, H.Item Removal of blue colouration from industrial effluents by burrnt-brick particles(National Science Foundation of Sri Lanka, 2000-12) Priyantha, N.; Keerthiratna, S.; Lokuge, I.; Gajanayake, H.