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 Brentford and Chiswick]
This page requires JavaScript
GRAPH "E"
COMPARISON OF CONCENTRATIONS OF SMOKE IN THE AIR
AT BRENTFORD AND AT CHISWICK HEATHFIELD TERRACE,
DURING THE YEARS 1953 AND 1963
CONCENTRATIONS EXPRESSED IN MICROGRAMMES PER CUBIC METRE
-51-