About: http://webisa.webdatacommons.org/253919330

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	For each voyage he calculated a productivity index.Hilts thinks the reason is the different incentives faced by agents under the alternative forms of organization.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com