Revolutionizing the tenements system from mining rights to contract sharing
| Опубликовано в:: | Journal on Environment, Energy and Minerals Vol. 2, no. 5 (Oct. 1999), 49-50 il |
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| Формат: | Статья |
| Язык: | English |
| Опубликовано: |
1999
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| Предметы: |