About: http://webisa.webdatacommons.org/36698178

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	Since Levitt???s pioneering paper, however, there have been many papers applying a wide variety of more credible research designs like natural experiments, regression discontinuity, matching and other techniques.
http://www.w3.org/ns/prov#wasQuotedFrom	marginalrevolution.com