@prefix ns1: <http://schema.org/> .

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    ns1:about [ a ns1:DefinedTerm ;
            ns1:alternateName "Workshop recipes" ],
        [ a ns1:DefinedTerm ;
            ns1:alternateName "Glass manufacture--Chemistry" ],
        [ a ns1:DefinedTerm ;
            ns1:alternateName "Glass manufacture--United States--20th century" ],
        <https://id.rijksmuseum.nl/320126588>,
        <https://id.rijksmuseum.nl/320128529>,
        <https://id.rijksmuseum.nl/320131510> ;
    ns1:contributor <https://id.rijksmuseum.nl/310191116> ;
    ns1:creator <https://id.rijksmuseum.nl/310191115> ;
    ns1:identifier [ a ns1:PropertyValue ;
            ns1:propertyID "NL-AmRIJ" ;
            ns1:value "273245" ] ;
    ns1:inLanguage "eng" ;
    ns1:name "Batch book of glass formulae",
        "Henry T. Hellmers' batch book of glass formulae" ;
    ns1:subjectOf [ a ns1:Statement ;
            ns1:additionalType <http://vocab.getty.edu/aat/300195187> ;
            ns1:text "Henry T. Hellmers. Biography/career ; Obituary -- Glass made by Henry Hellmers ; Three similar opal glasses -- Reprint and selected letters ; Glassware rejects ; Selected letters -- References -- Henry T. Hellmers batch book ; Notes ; Mould pastes ; Tank heating schedule -- List of glass formulae -- The batch book." ] ;
    ns1:workExample <https://id.rijksmuseum.nl/301273245> .