1. 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 Author(s): Waring, George E. Jr. (George Edwin), 1833-1898, author Publication: Charlotte, N.C. : Observer Print., [1898?] Subject(s): Waste Management -- methodsBacterial Physiological PhenomenaSewage
