. "Duys" . . "2011"^^ . "Duys, Willem O." . . . "1928"^^ . "Willem Duys" . _:Bba9f018f782a1fedf3036fd0b314d33c . "Duys, Willem (1928-2011)" . "Willem" . _:Bba9f018f782a1fedf3036fd0b314d33c . _:Bba9f018f782a1fedf3036fd0b314d33c . _:Bba9f018f782a1fedf3036fd0b314d33c "2023-05-22"^^ . _:Bba9f018f782a1fedf3036fd0b314d33c . _:Bba9f018f782a1fedf3036fd0b314d33c . _:Bba9f018f782a1fedf3036fd0b314d33c "069190291" . _:Bba9f018f782a1fedf3036fd0b314d33c . _:Bba9f018f782a1fedf3036fd0b314d33c . _:Bba9f018f782a1fedf3036fd0b314d33c .