| | | Hendrik Anthonij KramersBirth: December 17, 1894 32 29 — Rotterdam, Zuid-Holland, The Netherlands Death: April 24, 1952 — Leiden, Zuid-Holland, The Netherlands | | |
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Hendrik KramersBirth: December 11, 1862 39 34 — Veur, Leidschendam, Zuid-Holland, The Netherlands Death: April 5, 1933 — Rotterdam, Zuid-Holland, The Netherlands |
| | | | Johannes Hendrik KramersBirth: July 5, 1823 — 's Gravenhage, Zuid-Holland, The Netherlands Death: February 13, 1896 — Rotterdam, Zuid-Holland, The Netherlands |
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Jeanne Susanne BreukelmanBirth: September 15, 1865 43 35 — Kralingen, Rotterdam, Zuid-Holland, The Netherlands Death: December 21, 1912 — Rotterdam, Zuid-Holland, The Netherlands |
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