00396 a2200145 4500 955552081X 363.7 KOT 7126 9915 කොතලාවල, බී. පරිසර විද්‍යාව කොළඹ ලේක් හවුස් 1994 1994 218p. 24cm Environmental problems L 35849 35849 1 0 ddc 0 0 LEN MAIN MAIN LEN 2008-09-22 0 363.7KOT 3059 2008-09-22 00:00:00 0.00 2016-10-31 L According to the decision of the 186th Council held on 27.02.2018