About: http://webisa.webdatacommons.org/198756034

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	years, chemicals such as sulphuric acid and lime were introduced into the
http://www.w3.org/ns/prov#wasQuotedFrom	catalogs.com