00414nam a2200157 a 450000500170000000800410001702000180005804100080007608200140008410000180009824500450011625000130016126400520017430000110022670000190023720260717092719.0260717s1994    ii            000 0 eng d  a9788182831193  aeng04a628.501541 aSharma, B. K.10aEnvironmental Chemistry /cSharma, B. K.  a12th ed. 1aMeerut :bKrishna Prakashan Media,cc1994,2011.  aSev.p.1 aSharma, Piyush