000			00444 a2200169 4500
007			Paper bound
008			130426b xxu||||| |||| 00| 0 eng d
020			_a9788120345232
082			_222 _bME-E _a628
100			_aMeenakshi, P
245			_aElements of environmental science and engineering
250			_a2nd
260			_c2012 _bPHI Learning _aNew Delhi
300			_axi,336p.
942			_2ddc _cBK
999			_c30555 _d30555