000 00381nam a2200157Ia 4500
100 _aGRAY N F
020 _a8131202127
250 _a2nd.ed
650 _aWater technology
365 _cRS
365 _d1
942 _cENGBK
245 _aWater Technology : An Introduction for Environmental Scientists and Engineers
260 _bElsevier
_c2006
_aNew Delhi
300 _axx+645
999 _c12317
_d12317