00474cam a2200157 a 4500008004100000020001500041100001700056245007400073250001600147260005400163300001600217650002900233650001500262700001600277050002300293101214s2008    ii      sb    001 0 eng d  a81219088331 aDogra, S. S.12aA textbook of environmental chemistry & pollution controlcS.S. Dara.  a9th Edition  aNew Delhi, India :bS. CHAND & COMPANY LTDc2010.  axiii, 521p. 0aEnvironmental chemistry. 0aPollution.  aD. D Mishra14aTD193b.D64 2008eb