_:B4b2ff507d9c3c53ac91fa26504e47072 . "Eugen" . "von Hippel" . "Eugen von Hippel" . . . "Hippel, Eugen von" . . _:B4b2ff507d9c3c53ac91fa26504e47072 . _:B4b2ff507d9c3c53ac91fa26504e47072 . _:B4b2ff507d9c3c53ac91fa26504e47072 "2023-05-20"^^ . _:B4b2ff507d9c3c53ac91fa26504e47072 . _:B4b2ff507d9c3c53ac91fa26504e47072 . _:B4b2ff507d9c3c53ac91fa26504e47072 "176927751" . _:B4b2ff507d9c3c53ac91fa26504e47072 . _:B4b2ff507d9c3c53ac91fa26504e47072 . _:B4b2ff507d9c3c53ac91fa26504e47072 .