1. Ramazzini B. De Morbis Artificium Diatriba [Diseases of Workers], 1913. Translated by Wright WC. Chicago: University of Chicago Press, 1940.
2. Tredgold T. The Principles of Warming and Ventilation-Public Buildings. London: Taylor, 1836.
3. Figley KD, Elrod RM. Endemic asthma due to castor bean dust. DAMA 1928; 90: 79
4. Campbell JM. Acute symptoms following work with hay. Br Med J 1932; 2: 1143.
5. Lopez M, Salvaggio JE. Climate-weather-air pollution. In Middleton E Jr., Reed CE, Ellis EF, eds. Allergy: Principles and Practice. St. Louis: CV Mosby, 1983: 1203–1214.