The Witwatersrand Gold Region, Transvaal, South Africa, as Seen in Recent Mining Developments
| Autor: | Penrose, R. A. F. |
|---|---|
| Zdroj: | The Journal of Geology, 1907 Nov 01. 15(8), 735-749. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
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| Autor: | Penrose, R. A. F. |
|---|---|
| Zdroj: | The Journal of Geology, 1907 Nov 01. 15(8), 735-749. |
| Databáze: | JSTOR Journals |
| Externí odkaz: |
|