Hirsch 1883, Handbook of Geographical and Historical Pathology, vol. 1 (English translation), chronological table of miliary fever (Picardy sweat) epidemics in France 1718 to 1879; outbreak years extracted to sources/picardy_sweat_years.json
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Picardy sweat: 171 dated outbreaks with their departments, 1718 to 1874