"Poortinga" . . "Med. NLMD"@nl . . "P., Y." . "Poortinga, Ype Rinses" . "P." . "nl" . _:Bca0cd4aa7d4326fcd60f9efc02df169f . "1910"^^ . "Poortinga, Ype (1910-1985 ; Friese taal- en letterkunde)" . "Tresoar: 1910-05-28, Rinsumageast - 1985-12-02, Ljouwert" . "http://dbnl-srv-p200.dmz.kb.nl/auteurs/auteur.php?id=poor010" . "NLMD/P 7165"@nl . . "1985"^^ . . . "Poortinga, IJ." . "Ype" . "Poortinga, Y." . "Ype Poortinga" . _:Bca0cd4aa7d4326fcd60f9efc02df169f . _:Bca0cd4aa7d4326fcd60f9efc02df169f . _:Bca0cd4aa7d4326fcd60f9efc02df169f "2023-05-22"^^ . _:Bca0cd4aa7d4326fcd60f9efc02df169f . _:Bca0cd4aa7d4326fcd60f9efc02df169f . _:Bca0cd4aa7d4326fcd60f9efc02df169f "068290985" . _:Bca0cd4aa7d4326fcd60f9efc02df169f . _:Bca0cd4aa7d4326fcd60f9efc02df169f . _:Bca0cd4aa7d4326fcd60f9efc02df169f .