About: http://webisa.webdatacommons.org/371625698

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. 32 is an improved means of practicing the basic concepts of the apparatus of FIG. 31 in which it is not necessary to provide means for returning fluid flow back to the mud pit.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au