"aardrijkskundige/cartograaf" . . _:B261b906db710c5b1a539f796b3382e67 . "keul027" . "Keulen, Jan van ((17de eeuw)-1705)" . "van Keulen" . "16xx" . . "architect/bouwmeester/bouwkundig ingenieur" . "Jan van Keulen" . . "Jan" . "1705"^^ . "Jan van Keulen" . _:B261b906db710c5b1a539f796b3382e67 . _:B261b906db710c5b1a539f796b3382e67 "2021-02-08"^^ . _:B261b906db710c5b1a539f796b3382e67 . _:B261b906db710c5b1a539f796b3382e67 . _:B261b906db710c5b1a539f796b3382e67 . _:B261b906db710c5b1a539f796b3382e67 . _:B261b906db710c5b1a539f796b3382e67 .