00309nam a2200121Ia 4500008004100000100001300041245004600054260004300100300000800143650001400151942000700165999001500172190216s9999||||xx |||||||||||||| ||und||  aGoel P K 0aWater Pollution Causes Effect And Control  bNew Age International Publishersc1997  a418  aChemistry  cBK  c3339d3339