00474nam a2200145Ia 4500008004100000020001500041082001700056100002400073245009200097260003900189300000800228650003800236650003400274653002000308170901s1977    xx            000 0 und d  a0250402084  a628.16bM11T  aMcClelland, Nina. I 0aIndividual Onsite Wastewater SystemsbProceddings of the First National Conference 1974  aAnn ArborbAnn Arbor Sciencec1977  a166  aEngineering and allied operations  aTechnology (Applied sciences)  aWater treatment