{
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      "@type": "Person",
      "birthDate": "1719",
      "deathDate": "1779",
      "name": "Frenckell, Johan Christopher"
    },
    {
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      "contributor": {
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      "name": [
        "Dissertatio gradualis, de velocitate luminis, quam, consens. ampliss. facult. philos. ad Reg. Acad. Aboënsem, praeside mag. Andrea Planman, phys. professore reg. & ord. nec non Reg. Acad. Scient. Stockh. Socio. Publice ventilandam exhibet Andreas Röring, Ostrobotniensis. In auditorio majori die XXIV Martii, anni MDCCLXXII. h. a. m. s",
        "De velocitate luminis"
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