Churchman, W. Henry. (1871). The air we breathe: being an essay upon the sources, prevalence, nature and morbific influence of atmospheric impurities, as well as the principles of ventilation, and the most approved appliances for warming buildings. Indianapolis, Ind.: Indianapolis printing and publishing house.MLA Citation
Churchman, William Henry, 1818-1882. The Air We Breathe: Being an Essay Upon the Sources, Prevalence, Nature And Morbific Influence of Atmospheric Impurities, As Well As the Principles of Ventilation, And the Most Approved Appliances for Warming Buildings. Indianapolis, Ind.: Indianapolis printing and publishing house, 1871.
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