@prefix bf: <http://id.loc.gov/ontologies/bibframe/> .
@prefix bflc: <http://id.loc.gov/ontologies/bflc/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

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    bf:adminMetadata [ a bf:AdminMetadata ;
            bf:agent <http://id.loc.gov/vocabulary/organizations/cbc> ;
            bf:date "2026-09-11T20:17:05.823772+00:00"^^xsd:dateTime ;
            bf:derivedFrom <http://id.loc.gov/resources/instances/11219168> ;
            bf:status <http://id.loc.gov/vocabulary/mstatus/incmp> ],
        [ a bf:AdminMetadata ;
            bflc:catalogerId "Unknown" ;
            bf:date "2026-09-11" ;
            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/> ] ;
    bf:extent [ a bf:Extent ;
            rdfs:label "3 volumes" ;
            bf:note [ a bf:Note,
                        <http://id.loc.gov/vocabulary/mnotetype/physical> ;
                    rdfs:label "illustrations" ] ] ;
    bf:identifiedBy [ a bf:ReportNumber ;
            rdf:value "DOE/ET-0068" ],
        [ a bf:Identifier ;
            bf:assigner <http://id.loc.gov/vocabulary/organizations/dgpo> ;
            rdf:value "474-A-13" ],
        [ a bf:ReportNumber ;
            rdf:value "DOE/FE-0003" ],
        [ a bf:Lccn ;
            rdf:value "   78643630 " ] ;
    bf:instanceOf <https://stage.bcld.info/works/f7136420-5c77-4afb-a0dc-73f57551cbdd> ;
    bf:publicationStatement "Washington, D.C.: U.S. Dept. of Energy, Division of Coal Conversion, 1977-1980" ;
    bf:title [ a bf:Title ;
            bf:mainTitle "Coal liquefaction" ] .