About: http://webisa.webdatacommons.org/84633114

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	Among other findings, estimates that the average union member earns 15 percent more than the average non-union member after controlling for observable characteristics such as education and industry.
http://www.w3.org/ns/prov#wasQuotedFrom	heritage.org