Ten years' practical experience in sewage treatment : a contribution to the conference held at the Society of Arts, on the 15th and 16th of May, 1879 / by Fritz Hille.

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Ten years' practical experience in sewage treatment : a contribution to the conference held at the Society of Arts, on the 15th and 16th of May, 1879 / by Fritz Hille. Public Domain Mark. Source: Wellcome Collection.

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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.