PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A special type of Maser, called the Laser, is a light amplifier and source of coherent light; it is a spectacular by product and the first ever produced by man. $5.00. (3020729) Acceptability of Printed Wiring Boards By IPC-A-600A, Institute Of Printed Circuits September 1970 (Revised).
http://www.w3.org/ns/prov#wasQuotedFrom
  • radioattic.com