Timeline Chart
1915--
1917--
1920--
1923--
1926--
1929--
1932--
1935--
1938--
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1983--
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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