The sewage committee of 1864 : and its report as to the purification of river water from town sewage / by Thomas Spencer.

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The sewage committee of 1864 : and its report as to the purification of river water from town sewage / by Thomas Spencer. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.