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

Licence: Public Domain Mark

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

Provider: 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.)