About: http://webisa.webdatacommons.org/453389600

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	But there are difficulties in connection with the industries concerned in the production of such commodities as books and newspapers.
http://www.w3.org/ns/prov#wasQuotedFrom	libertyfund.org