"2000" . . "Folkert" . "6882" . "1944"^^ . "6882" . "componist" . "2000-12-20"^^ . . "2000-12-20" . "Grondsma" . "GRONDSMA, FOLKERT |f [componist]" . "componist" . "Folkert" . "GRONDSMA, FOLKERT" . "1944" . "1944 2000 2000-12-20 6882 Folkert GRONDSMA, FOLKERT GRONDSMA, FOLKERT |f [componist] Grondsma componist ne" . "Grondsma" . . "ne" .