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Start Over You searched for: Subjects Sewage Remove constraint Subjects: Sewage Subjects Waste Management -- methods Remove constraint Subjects: Waste Management -- methods Languages English Remove constraint Languages: English

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2. The purification of sewage by bacterial oxidation: a study of the natural processes of filth removal and of the means by which their efficiency may be artificially intensified : including a description of works for sewage disposal at Willow Grove Park, Philadelphia, Pa