000 00273nam a22001097a 4500
100 _aAbeysirigunawardena,N. Yasas
_9190
245 _aAir pollution and its Sri Lankan Situation
260 _aColombo
_bIchemc
_c2014
300 _a17
650 _aair pollution
_9191
942 _cBK
999 _c3249
_d3249