00374nam a22001217a 4500020001800000082001700018100001600035245007700051260003000128300000900158650006800167700001700235  a9788121908832  a628.5bDAR/T  aDara, S. S.  aA textbook of environmental chemistry and pollution control / S. S. Dara  aNew DehlibS. Chandc2007  a522p  aPollutionaEnvironmental engineeringv Environmental chemistry   aMishra, D. D