00289nam a2200121Ia 4500100001400000650001400014654001800028245006300046260002300109082001500132300000800147546001200155  aDara/S.S   aChemistry  aenvironmental  aTextboolk of Environmental chemistry and pollution control  bS.Chand & coc2002  a628.5bDAR  a338  aENGLISH