00305nam a2200121Ia 4500008004100000100001700041245002700058260004300085300000900128650002400137942000700161999001500168190216s9999||||xx |||||||||||||| ||und||  aAnilkumar De 0aEnviormental Chemistry  bNew Age International Publishersc2000  a392p  aChemistry-Chemistry  cBK  c2778d2778