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Credit
Sanitary reform : water-closets versus privies, practically considered in reference to Manchester and Salford : being the substance of a paper read before the Manchester and Salford Sanitary Association, January 29, 1869 / by John Newton. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.