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

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        bf:Text,
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    bflc:aap "The construction and calibration of the NDRC interpupillometer. (Memorandum No. 4.)" ;
    bflc:aap-normalized "theconstructionandcalibrationofthendrcinterpupillometer(memorandumno4)" ;
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            bf:classificationPortion "U393" ;
            bf:status <http://id.loc.gov/vocabulary/mstatus/uba> ],
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            rdfs:label "APP-112.2-M2" ;
            bf:source [ a bf:Source ;
                    bf:code "z" ] ] ;
    bf:content <http://id.loc.gov/vocabulary/contentTypes/txt> ;
    bf:contribution [ a bf:Contribution ;
            bf:agent <http://id.loc.gov/rwo/agents/n50071121> ;
            bf:role <http://id.loc.gov/vocabulary/relators/ctb> ] ;
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    bf:title [ a bf:Title ;
            bf:mainTitle "The construction and calibration of the NDRC interpupillometer. (Memorandum No. 4.)" ] .