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 Southall]
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Graph E
Atmospheric Pollution by Sulphur Oxides Determined by the Lead Peroxide Method
Comparison with Other Districts
These figures are printed with the permission of the Authorities concerned.
50
Sulphur Compounds at Milligrams SO3 per day per 100 sq. cm.
Southall —. —. —.— Cambridge ---- Westminster ---- Sheffield