_:B58e37d7bf6968cfb99a29bdbb6f107ac . . "1889"^^ . "Pieter Hendrik" . . "Cittert, Pieter Hendrik van (1889-1959)" . . . "van Cittert" . "Pieter Hendrik van Cittert" . "Cittert, P.H. van" . "1959"^^ . _:B58e37d7bf6968cfb99a29bdbb6f107ac . _:B58e37d7bf6968cfb99a29bdbb6f107ac . _:B58e37d7bf6968cfb99a29bdbb6f107ac "2023-05-22"^^ . _:B58e37d7bf6968cfb99a29bdbb6f107ac . _:B58e37d7bf6968cfb99a29bdbb6f107ac . _:B58e37d7bf6968cfb99a29bdbb6f107ac "069624895" . _:B58e37d7bf6968cfb99a29bdbb6f107ac . _:B58e37d7bf6968cfb99a29bdbb6f107ac . _:B58e37d7bf6968cfb99a29bdbb6f107ac .