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| Cobre (1) |
| Flotación de minerales (1) |
| http://purl.org/pe-repo/ocde/ford#2.04.02 (1) |
| Minerales sulfurados (1) |
| Cobre (1) |
| Flotación de minerales (1) |
| http://purl.org/pe-repo/ocde/ford#2.04.02 (1) |
| Minerales sulfurados (1) |