About: http://webisa.webdatacommons.org/138429501

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 average particle size of the primary particles is preferably 1 to 20 ??m, particularly 3 to 15 ??m.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com