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| 公开/私有: | 公开 私有 |
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- 研究 (5)
- conservation of natural resources (2)
- history (2)
- social aspects (2)
- 世界经济 (2)
- 企业家 (2)
- 企业精神 (2)
- abandoned mined lands reclamation (1)
- capital investments (1)
- communication (1)
- company towns (1)
- corporacion minera de bolivia (1)
- cost effectiveness (1)
- death (1)
- ecology (1)
- economic development (1)
- environmental aspects (1)
- environmental protection (1)
- exceptionalism (1)
- fiction (1)
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