A lay lecture on sanitary matters, with a paper on sewer ventilation / by a member of the Association for the Promotion of Social Science.

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A lay lecture on sanitary matters, with a paper on sewer ventilation / by a member of the Association for the Promotion of Social Science. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.