00290nam a2200109Ia 4500008004100000082002400041100001500065245003700080250001200117260004300129300000800172240913s9999||||xx |||||||||||||| ||und||  aGS    363.73  KHO/E  aSM Khopkar 0aEnvironemntal Pollution Analysis  a1st Ed.  bNew Age InternationalaNew Delhic2001  a190