000 00360nam a2200133Ia 4500
008 240913s9999||||xx |||||||||||||| ||und||
082 _aGS 628 ELA/U
100 _aR Elangovan and Saseetharan
245 0 _aUnit Operations in Environmental Engineering
250 _aNULL
260 _bNew Age International
_aNew Delhi
_c1997
300 _a178
942 _cBKS
999 _c6086
_d6086