000			00371nam a2200133Ia 4500
245			_aPrinciples of environmental engineering _cby P.Anandan and R. Kumaravelan
260			_aChennai _bScitech _c2004
300			_av.p.
082			_a628.5 _bA532P
690			_aEnvironmental engineering
700			_aKumarvelan,R. jt.auth.
500			_aTEQIP Project
100			_aAnandan,P.
999			_c78348 _d78348