About: http://webisa.webdatacommons.org/451971309

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	FIG. 6 is a vertical section through a second embodiment of successive concentric lengths of casing in a borehole cased in accordance with the invention after the casing has been filled;
http://www.w3.org/ns/prov#wasQuotedFrom	google.es