5HOWE G M. People, Environment, Disease and Death: A Medical Geography of Britain throughout the Age [ M ]. Cardiff: University of Wales Press, 1997 : 155.
6JOAN L. A Social History of Medicine: Health, Healing and Disease in England, 1750-1950 [ M ]. London: Routledge, 2001.
7LEWIS R A. Edwin Chadwick and the Public Health Movement, 1832 - 1854 [ M ]. London: Longmans, 1952.
8HERMAN J L. The Social Impacts of Infections Disease in England, 1600 to 1900 [ M]. New York: the Edwin Mellen Press, 2000.
