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 Hendon]
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Daily average Sulphur per 100 million vols of air -
Golders Green
Daily average Sulphur per 100 million vols. of air -
Edgware
Daily average Smoke concentration in mgms, per
100 cu. metres of air - Golders Green
Daily average Smoke concentration in mgms per
100 cu. metres of air - Edgware
58