@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 "2026-09-11T20:17:22.715871+00:00"^^xsd:dateTime ;
            bf:derivedFrom <http://id.loc.gov/resources/instances/11220740> ;
            bf:status <http://id.loc.gov/vocabulary/mstatus/incmp> ],
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            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 "4 volumes" ;
            bf:note [ a bf:Note,
                        <http://id.loc.gov/vocabulary/mnotetype/physical> ;
                    rdfs:label "illustrations, maps" ] ] ;
    bf:identifiedBy [ a bf:Lccn ;
            rdf:value "   78645563 " ],
        [ a bf:Identifier ;
            bf:assigner <http://id.loc.gov/vocabulary/organizations/dgpo> ;
            rdf:value "0621-C" ],
        [ a bf:Identifier ;
            rdf:value "x290140799" ] ;
    bf:instanceOf <https://stage.bcld.info/works/577b3923-010a-4c86-abe2-dd1055469ba8> ;
    bf:publicationStatement "Washington, D.C.: For sale by the Supt. of Docs., U.S. G.P.O., [1977-1980]",
        "[Reston, Va.?]: U.S. Dept. of the Interior, Geological Survey" ;
    bf:title [ a bf:Title ;
            bf:mainTitle "United States Geological Survey yearbook" ],
        [ a bf:VariantTitle,
                <http://id.loc.gov/vocabulary/vartitletype/cov> ;
            bf:mainTitle "USGS" ] .