000 00284nam a2200121Ia 4500
008 220201s1979 xx 000 0 eng d
082 _a628.3
_bRAO
100 _aRao, MN & Datta, AK
245 0 _aWaste water treatment
260 _bOxford & IBH
_c1979
300 _a337
942 _2ddc
999 _c81807
_d81807