London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Willesden 1910
[Report of the Medical Officer of Health for Willesden]
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Charts showing destee of dust recorded on plates exposed during ond fot not less than hall an hour after
Sweeping of floor, the dotted line in each case representing results of control observations made
on an untreated floor.