00266nam a2200097Ia 450000500170000000800410001708200150005810000180007324500370009126000400012820260224041042.0260224s9999||||xx |||||||||||||| ||und||  a627.56 HAM  aHammer, M.J.  0aWater and waste-water technology  aNew York: John Wiley & Sons. c2008