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Credit
Sewage-analysis. A practical treatise on the examination of sewage and effluents from sewage... Including also a chapter on utilisation and purification / by J. Alfred Wanklyn and William John Cooper. Public Domain Mark. Source: Wellcome Collection.
Provider
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.