Timeline Chart
1915--
1916--
1920--
1924--
1928--
1932--
1936--
1940--
1944--
1948--
1952--
1956--
1960--
1964--
1968--
1972--
1976--
1980--
1984--
1986--
| Birth--11 June 1920 - Eenrum, De Marne, Groningen, Netherlands |
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| Death--20 November 1981 - Leiden, Netherlands (Age 61) |
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