About: http://webisa.webdatacommons.org/288523132

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. 2 is a graph showing the relative output vs. recording density of the magnetic head according to this invention and a comparative head, and
http://www.w3.org/ns/prov#wasQuotedFrom	google.com