Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Wandsworth, Metropolitan Borough]
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PLATE A Covent Garden Market Development at Nine Elms—
Air-testing a 21-inch concrete surface water drain: the adjacent 6-inch
foul water drain is tested by a water test (see pages 6 and 33)