00563    a2200193   4500020001500000082001700015100002700032245006500059250001300124260006300137300002500200650001600225650001600241650001600257650001000273700003100283700002900314700002600343  a0875530478  a628.161bSTA  aEaton, Andrew D. eed.  aStandard methods for the examination of water and wastewater  a21st ed.  aWashingtonbAmerican public health associationc1995g2005  axl,1325p.billc29cm  awaste water  aEngineering  aEnvironment  awater  aGreenberg, Arnold E. eed.  aClesceri, Lenore S eed.  aRice, Eugene W. eed.