00419nam a2200145Ia 4500008004100000020001500041082001700056100001800073245004000091260005000131300000800181650003300189650002000222653003100242170901s2004    xx            000 0 und d  a8176485349  a363.73bT79E  aTrivedi, P.R. 0aEnvironmental Pollution and Control  aNew DelhibA P H Publishing Corporationc2004  a161  aSocial problems and services  aSocial sciences  aPollution control industry