An Environmental study of artisanal, small, and medium mining in Bolivia, Chile, and Peru
| 其他作者: | |
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| 格式: | 圖書 |
| 語言: | English |
| 出版: |
Washington, D.C.
World Bank
1999
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| 叢編: | World Bank technical paper
no.429 |
| 主題: |