About: http://webisa.webdatacommons.org/296783759

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	Preference is given to a mean particle size of from 1 to 100 ??m, in particular from 5 to 50 ??m, especially from 10 to 20 ??m.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com