000 00324nam a2200121Ia 4500
008 220201s1989 xx 000 0 eng d
041 _aENG
100 _aCHHATWAL,G.R
245 0 _aENVIRONMENTAL WATER POLLUTION & ITS CONTROL
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1989
300 _a532
942 _2ddc
999 _c60847
_d60847