00310nam a2200121Ia 4500008004100000100001300041245004600054260004300100300000900143650001400152942000700166999001500173190216s9999||||xx |||||||||||||| ||und||  aGoel P K 0aWater Pollution Causes Effect And Control  bNew Age International Publishersc1997  a269p  aChemistry  cBK  c2850d2850