Disease and putrescent air. Some principles which must govern the efficient ventilation of sewers, and the effective hygenic treatment of "sewer gas" : also, the sanitary ventilation of house drains and connections / by Thomas Rowan.

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Disease and putrescent air. Some principles which must govern the efficient ventilation of sewers, and the effective hygenic treatment of "sewer gas" : also, the sanitary ventilation of house drains and connections / by Thomas Rowan. Public Domain Mark. Source: Wellcome Collection.