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<http://data.bibliotheken.nl/id/thes/p140544860> <http://schema.org/birthDate> "1886"^^<http://www.w3.org/2001/XMLSchema#gYear> .
<http://data.bibliotheken.nl/id/thes/p140544860> <http://schema.org/alternateName> "Kovalev, S.I." .
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<http://data.bibliotheken.nl/id/thes/p140544860> <http://schema.org/givenName> "Sergej Ivanovič" .
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<http://data.bibliotheken.nl/id/thes/p140544860> <http://schema.org/name> "Sergej Ivanovič Kovalev" .
<http://data.bibliotheken.nl/id/thes/p140544860> <http://schema.org/deathDate> "1960"^^<http://www.w3.org/2001/XMLSchema#gYear> .
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