Septic and antiseptic sewage disposal unit
作者： Blair Bertrand Joaquin , Light Douglas John Nelson
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lens.org 参考文章(5)
Harry E Schlenz, Method and apparatus for digesting garbage and sewage sludge ,(1948)
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Courtenay De Kalb, Combined settler and hydraulic classifier. ,(1914)
Friedrich Wilhelm Dittler, Apparatus for clarifying fecal matter. ,(1901)
John T Travers, Sewage-treatment plant ,(1927)