000 00304nam a2200121Ia 4500
100 _aELANGOVAN. R.
020 _a8122410979
365 _cRS
365 _d1
942 _cENGBK
245 _aUnit Operations in Environmental Engineering
260 _bNew Age Internation Publishers Pvt Ltd
_c2001
_aNew Delhi
999 _c13627
_d13627