00431nam a22001577i 4500001001000000005001700010008004100027082002700068100001600095245004300111250001000154260004600164300001700210650002800227020001800255SXC02340220260819093734.0260101s2000    ii            000 0 eng d  aCHE 540.157 SHA-E5222  aSharma, B K10aEnvironmental chemistry /cSharma, B K  a5 ed.  abKrishna Prakashan Mandir, Meerut,c2000  ap. ;c22 cm. 0aEnvironmental chemistry  a9780198564416