(P21)	(Q6581097) (P248) (P813) Friday, November 27, 2015 (P854) http://hoogleraren.ub.rug.nl/?page=showPerson&type=hoogleraar&hoogleraar_id=1520
(P31)	(Q5)
(P106)	(Q1622272) (P2016) 1520 (P248) (P813) Friday, April 22, 2022 (Q1650915)
(P108)	(Q850730)
(P569)	Friday, January 1, 1943 (P248) (P2016) 1520 (P1810) Dirk Theodorus Sleijfer (P813) Monday, October 9, 2017
(P735)	(Q1605531)

aliases

D. T. Sleijfer Dirk Theodorus Sleijfer

External Links

(P2016)

1520