@prefix bf: <http://id.loc.gov/ontologies/bibframe/> .
@prefix bflc: <http://id.loc.gov/ontologies/bflc/> .
@prefix mads: <http://www.loc.gov/mads/rdf/v1#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://dev.bcld.info/works/00d13a8a-6951-4d17-afdf-a8e26169c855> a bf:Monograph,
        bf:Text,
        bf:Work ;
    bflc:aap "Held, Gilbert, 1943-. Voice & data internetworking" ;
    bflc:aap-normalized "heldgilbert1943voice&datainternetworking" ;
    bf:adminMetadata [ a bf:AdminMetadata ;
            bflc:catalogerId "Unknown" ;
            bf:date "2026-09-30" ;
            bf:descriptionAuthentication <http://id.loc.gov/vocabulary/marcauthen/pcc> ;
            bf:descriptionLanguage <http://id.loc.gov/vocabulary/languages/eng> ;
            bf:descriptionLevel <http://id.loc.gov/ontologies/bibframe-2-6-0/> ],
        [ a bf:AdminMetadata ;
            bf:agent <http://id.loc.gov/vocabulary/organizations/cbc> ;
            bf:date "2026-09-30T17:48:43.989538+00:00"^^xsd:dateTime ;
            bf:derivedFrom <http://id.loc.gov/resources/works/11936049> ;
            bf:status <http://id.loc.gov/vocabulary/mstatus/c> ] ;
    bf:content <http://id.loc.gov/vocabulary/contentTypes/txt> ;
    bf:contribution [ a bf:Contribution,
                bf:PrimaryContribution ;
            bf:agent <http://id.loc.gov/rwo/agents/n79083192> ;
            bf:role <http://id.loc.gov/vocabulary/relators/aut> ] ;
    bf:hasInstance <https://dev.bcld.info/instances/d2b591fa-223a-4a40-853d-84978cbf42fc> ;
    bf:language <http://id.loc.gov/vocabulary/languages/eng> ;
    bf:subject [ a bf:Topic,
                mads:Topic ;
            rdfs:label "Multimedia systems" ;
            bflc:aap-normalized "multimediasystems" ;
            mads:authoritativeLabel "Multimedia systems" ],
        [ a bf:Topic,
                mads:Topic ;
            rdfs:label "Data transmission systems" ;
            bflc:aap-normalized "datatransmissionsystems" ;
            mads:authoritativeLabel "Data transmission systems" ],
        [ a bf:Topic,
                mads:Topic ;
            rdfs:label "Voice mail systems" ;
            bflc:aap-normalized "voicemailsystems" ;
            mads:authoritativeLabel "Voice mail systems" ],
        [ a bf:Topic,
                mads:Topic ;
            rdfs:label "Internetworking (Telecommunication)" ;
            bflc:aap-normalized "internetworking(telecommunication)" ;
            mads:authoritativeLabel "Internetworking (Telecommunication)" ] ;
    bf:title [ a bf:Title ;
            bf:mainTitle "Voice & data internetworking" ] .