<http://webisa.webdatacommons.org/131153182>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<econlib.org> .
<http://webisa.webdatacommons.org/131153182>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/318049851>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/131153182> .
<http://webisa.webdatacommons.org/131153182>	<http://www.w3.org/ns/prov#value>	"Once we have tractors and other machinery to work the land, and once we have trucks and roads for shipping farm produce long distances, the case for the small-scale farm is weakened." .