Modern methods of sewage disposal : for towns, public institutions, and isolated houses / by Geo. E. Waring, Jr.

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Modern methods of sewage disposal : for towns, public institutions, and isolated houses / by Geo. E. Waring, Jr. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)