About: http://webisa.webdatacommons.org/284139779

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	The rear wall is preferably fabricated as a metal pressing for example of a nickel-iron alloy or mild steel, enabling the ribs to be formed easily and providing adequate mechanical strength.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com