About: http://webisa.webdatacommons.org/448717590

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	Digital Signal hierarchy and theory- DS1, DS3, STS1, SONET DWDM. Routine Manufacturer and customer maintenance and installation including Ethernet, and optical...
http://www.w3.org/ns/prov#wasQuotedFrom	indeed.com