About: http://webisa.webdatacommons.org/75513005

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	The effects of unions on employment are negative for both groups and especially for blacks.
http://www.w3.org/ns/prov#wasQuotedFrom	nber.org