@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:date "2026-09-11" ;
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            bf:descriptionLevel <http://id.loc.gov/ontologies/bibframe-2-6-0/> ] ;
    bf:editionStatement "First edition" ;
    bf:extent [ a bf:Extent ;
            rdfs:label "pages cm" ] ;
    bf:identifiedBy [ a bf:Isbn ;
            bf:qualifier "hardback" ;
            rdf:value "9781032499987" ],
        [ a bf:Isbn ;
            bf:qualifier "paperback" ;
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            rdf:value "  2023057449" ] ;
    bf:instanceOf <https://stage.bcld.info/works/d341b7e5-93e5-4be7-9818-3114c80ca7d1> ;
    bf:publicationStatement "Boca Raton: AK Peters, CRC Press, 2024" ;
    bf:title [ a bf:Title ;
            bf:mainTitle "Parabolic problems" ;
            bf:subtitle "60 years of mathematical puzzles in Parabola" ] .

