| http://www.w3.org/ns/prov#value | - Communication channels used frequently in virtual reference include chat, videoconferencing, Voice over IP, co-browsing, e-mail, and instant messaging.--[http://ala.org/ala/rusa/protools/referenceguide/virtrefguidelines.cfm RUSA Guidelines]+Virtual reference is reference service initiated electronically where patrons employ computers or other technology to
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