About: http://webisa.webdatacommons.org/270595076

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	Books with photos, graphs, charts and drawings are much more expensive to publish, most of the cost goes to the company who actually makes the book, the cost is mostly for the paper, ink, and the construction of the book.
http://www.w3.org/ns/prov#wasQuotedFrom	permaculture.org.au