TY - BOOK AU - Pathirana, C. D. K TI - Investigation of pollution extent of Attanagalu Oya: causes and effects U1 - 577.627072 PY - 2013/// KW - Water pollution KW - Pollution ecology N1 - Thesis submitted to the University of Sri Jayewardenepura for the award of Degree of Master of Philosophy in Forestry and Environmental Science on 30 th October 2013 ER -