<http://webisa.webdatacommons.org/prov/15156318>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/31357298> .
<http://webisa.webdatacommons.org/prov/39646410>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/31357298> .
<http://webisa.webdatacommons.org/prov/16646727>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/31357298> .
<http://webisa.webdatacommons.org/31357298>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<bookfinder.com> .
<http://webisa.webdatacommons.org/31357298>	<http://www.w3.org/ns/prov#value>	"'A valuable and important study...in which source materials from history, economics, soil science, geography and other fields are brilliantly marshalled and interrelated." .
<http://webisa.webdatacommons.org/31357298>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .