1 Gunawardena, E. R. N. 2001? Pollution of water resources in Sri Lanka with special reference to agricultural pollution. In University of Peradeniya. Postgraduate Institute of Agriculture (PGIA). Silver Jubilee commemorative volume, Postgraduate Institute of Agriculture, University of Peradeniya, 1975-2000. Peradeniya, Sri Lanka: University of Peradeniya. PGIA. pp.116-126.