Sewage disposal : ten years' (now fourteen years) in works of intermittent downward filtration separately and in combination with surface irrigation with notes on the practice and results of sewage farming / by J. Bailey-Denton.

Licence: Public Domain Mark

Credit: Sewage disposal : ten years' (now fourteen years) in works of intermittent downward filtration separately and in combination with surface irrigation with notes on the practice and results of sewage farming / by J. Bailey-Denton. Source: Wellcome Collection.