000 00292nam a2200121Ia 4500
100 _aRav, M Narayana & Datta, Amal K.
942 _cBK
245 _aWaste water treatment
260 _aNew Delhi
_bOxford + IBH
_c1987
082 _a363.7284
_bRav/Dat
300 _axiii,346
546 _aEnglish
999 _c337941
_d337941
041 _aeng