About: http://webisa.webdatacommons.org/230765428

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 particles have a maximum grain size of 100 ??m, preferably 60 ??m, in particular 20 ??m.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com