About: http://webisa.webdatacommons.org/437639014

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	Trade directories are a rich source for researching the history of industries and trades and for family history.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencemuseum.org.uk