About: http://webisa.webdatacommons.org/375546062

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	This book attempts to broaden that understanding, especially for the period prior to 1800, when most researchers begin to experience difficulties.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com