00422nam a2200157Ia 4500003000400000005001700004008004100021020001500062040000900077082001700086100003800103245004500141250001200186260005700198300000900255OSt20250704104801.0190216s9999||||xx |||||||||||||| ||und||  a8122414885  coclc  a628.5bDEA/E1 aDe, Anil K.q(Anil Kumar),d1927- 0aEnvironmental Chemistry /cAnil Kumar De  a5th Ed.  bNew Age International Publishers,c2000.aNew Delhi:  a406p