About: http://webisa.webdatacommons.org/30239961

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	Impermeable layers may comprise a polymeric film, such as a polyvinyl alcohol/acetate films or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com