About: http://webisa.webdatacommons.org/119953756

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Hygiene was a problem, and frequent epidemics of typhoid, cholera and smallpox produced an atrocious mortality rate.
http://www.w3.org/ns/prov#wasQuotedFrom	zcommunications.org