"1952"^^ . "Klein, Ursula (1952-)" . . "Klein" . "scheikunde, proefschr. Konstanz, 1993"@nl . "Ursula" . . _:B0b90c7885f55df434ffeb34c7dc67f9f . "Ursula Klein" . "B0217851: Max Planck Institute for the History of Science, Berlin" . . _:B0b90c7885f55df434ffeb34c7dc67f9f . _:B0b90c7885f55df434ffeb34c7dc67f9f . _:B0b90c7885f55df434ffeb34c7dc67f9f "2023-05-19"^^ . _:B0b90c7885f55df434ffeb34c7dc67f9f . _:B0b90c7885f55df434ffeb34c7dc67f9f . _:B0b90c7885f55df434ffeb34c7dc67f9f "140703357" . _:B0b90c7885f55df434ffeb34c7dc67f9f . _:B0b90c7885f55df434ffeb34c7dc67f9f . _:B0b90c7885f55df434ffeb34c7dc67f9f .