00499nam a22001577a 4500008004100000020001500041050002500056100002200081245011100103250001300214260003000227300001400257650002800271700002200299700002000321180814b        xxu||||| |||| 00| 0 eng d  a0071230459  aTD193b.S29 2003 c.1  aSawyer, Clair N.   aChemistry for Environmental Engineering  and SciencecClair N. Sawyer, Perry L. McCarty and Gene F. Parkin  a5th ed.   aBoston bMcGrawHillc2003  axv, 752p.  aEnvironmental Chemistry  aMcCarty, Perry L.  aParkin, Gene F.