Cholera cases around the Broad Street Pump from "On the Mode of Communmication of cholera", 1855, Dr John Snow
Image courtesy of Black Dog Publishing.
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Sunday, 22 November 2009
Sunday, 22 November 2009
Cholera cases around the Broad Street Pump from "On the Mode of Communmication of cholera", 1855, Dr John Snow
Image courtesy of Black Dog Publishing.
