About: http://webisa.webdatacommons.org/203790457

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	The length L of each depression 7??? is preferably from about 1 to about 100 ??m, particularly about 2 to about 20 ??m, to assure servo signal detection.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com