_:B1012d55a543f0c863102a28e36531eec . _:B1012d55a543f0c863102a28e36531eec . _:B1012d55a543f0c863102a28e36531eec "2023-05-21"^^ . _:B1012d55a543f0c863102a28e36531eec . _:B1012d55a543f0c863102a28e36531eec . _:B1012d55a543f0c863102a28e36531eec "163474591" . _:B1012d55a543f0c863102a28e36531eec . _:B1012d55a543f0c863102a28e36531eec . _:B1012d55a543f0c863102a28e36531eec . "1859"^^ . _:B1012d55a543f0c863102a28e36531eec . . "1954"^^ . . . . "Vipper" . "Wipper, R.J." . "Vipper, Robert Jurʹevič (1859-1954)" . "Vipper, R." . "Robert Jurʹevič" . "Robert Jurʹevič Vipper" .