_:Beca00ef9ccbba3bacfb263571bcb2036 . "Thomas" . "1934"^^ . "Sieverts" . "Sieverts, Thomas (1934-)" . . . . "Ook aangetroffen als: Tom Sieverts" . "Thomas Sieverts" . _:Beca00ef9ccbba3bacfb263571bcb2036 . _:Beca00ef9ccbba3bacfb263571bcb2036 . _:Beca00ef9ccbba3bacfb263571bcb2036 "2023-05-19"^^ . _:Beca00ef9ccbba3bacfb263571bcb2036 . _:Beca00ef9ccbba3bacfb263571bcb2036 . _:Beca00ef9ccbba3bacfb263571bcb2036 "07327366X" . _:Beca00ef9ccbba3bacfb263571bcb2036 . _:Beca00ef9ccbba3bacfb263571bcb2036 . _:Beca00ef9ccbba3bacfb263571bcb2036 .