Willem Johannes van Biljon 16 February 1929 to 1 August 2019.
| Autor: | Brynard, Manie, Beukes, Nic, van Reenen, Dirk, van Biljon, Stephanus |
|---|---|
| Předmět: | |
| Zdroj: | Geobulletin - Geological Society of South Africa; Jun2020, Vol. 63 Issue 2, p45-48, 4p |
| Databáze: | Complementary Index |
| Externí odkaz: |
|