About: http://webisa.webdatacommons.org/456142008

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	I believe it???s only available currently to USA based purchasers, I???m not sure why they hate Canada but nonetheless this is great for spreading your content, especially to those that can???t afford all the books they want to read.
http://www.w3.org/ns/prov#wasQuotedFrom	unmarketing.com