000 00266nam a22001097a 4500
082 _a628.161 WAT
245 _aWater Quality Management,a need in the new millenium 2001
260 _aColombo
_bIchemc
_c2001
300 _a34 p
650 _awater quality
942 _cSEMNR
999 _c3398
_d3398