<http://webisa.webdatacommons.org/34465726> <http://www.w3.org/ns/prov#value> "The desired specific gravity of the intermediate layer may be obtained by adding a filler such as barium sulfate, zinc oxide, titanium dioxide and combinations thereof to the intermediate layer blend." . <http://webisa.webdatacommons.org/prov/143310221> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/34465726> . <http://webisa.webdatacommons.org/prov/163073501> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/34465726> . <http://webisa.webdatacommons.org/prov/269511072> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/34465726> . <http://webisa.webdatacommons.org/34465726> <http://www.w3.org/ns/prov#wasQuotedFrom> <google.com> . <http://webisa.webdatacommons.org/34465726> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/prov/270433949> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/34465726> .