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 D
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
Godalming
Southall (average of 2 observation points)
Sheffield (average of 23 observation points)
Westminster (average of 9 observation points)
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