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| Medical research confirms Dr. Heese's findings. Familia vol. 9, no. 2, 1972, p. 37-38. |
| De Kock, G.de V.: Die Stamland-samestelling van die blanke bevolking aan die Kaap 1660 - 1749. Familia vol. 22, no. 2, 1985, p. 50-53. |
| Heese, JA.: Die herkoms van die Afrikaner: 'n nabetragting. Familia vol. 17, no. 3/4, 1980, p. 56-59. |
| Heese, JA.: Postscript to Dr Ross's article. Familia vol. 12, no. 4, 1975, p. 101. |
| Heese, JA.: Ons skakels met ons stamlande. Familia vol. 17, no. 1, 1980, p. 5-6. |
| Le Roux, J.G.: Die afstamming van ons Eerste Ministers. Familia vol. 10, no. 3, 1973, p. 72. |
| Ross, R.: The "white" population of South Africa in the eighteenth century. Familia vol. 12, no. 4, 1975, p. 79-86, 92-101. |
| Van der By1, J.: Die herkoms van die Afrikaner. Familia vol. 13, no. 1, 1976, p. 23-24. |
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